INCH-POUND MIL-PRF-29504/4D w/Amendment 2 8 January 2015 SUPERSEDING MIL-PRF-29504/4D w/Amendment 1 1 July 2010 PERFORMANCE SPECIFICATION SHEET TERMINI, FIBER OPTIC, CONNECTOR, REMOVABLE, ENVIRONMENT RESISTING, PIN TERMINUS, SIZE 16, REAR RELEASE, MIL-DTL-38999, SERIES III This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein shall consist of this specification sheet and MIL-PRF-29504. FIGURE 1. Pin terminus AMSC N/A FSC 6060 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Inches .002 .003 .006 .029 .033 .101 .103 mm 0.05 0.08 0.15 0.74 0.84 2.57 2.62 Inches .127 .130 .225 .295 .305 .853 1.176 mm 3.23 3.30 5.72 7.49 7.75 21.67 29.87 NOTES: 1. Dimensions are in inches, except diameter "A" which is dimensioned in metric microns only. 2. Metric equivalents are given for general information only. 3. Unless otherwise indicated, all diameters are to be concentric with respect to datum A within .003 inch (0.08 mm). 4. Dimensions apply after plating when applicable. 5. Ferrule end face may be flat or have a radius that does not exceed a curvature of 10 mm. Recommended inspection documentation advises that an end face curvature of 25 mm falls between that of a flat end face and one with a curvature of 10 mm. 6. Hole "A" diameter and tolerance are specified in table I. 7. Hole circular runout in table I relative to datum A. 8. Manufacturer's symbol or trademark location is in front of the first TICC band (see figure 1 of MILPRF-29504). As an alternative to TICC bands, each digit of the TICC may be designated by the number which corresponds to the color band. An alternate location of the marking shall be allowed only in the case of insufficient surface area and only if approved by the qualifying activity. o o 9. Ferrule surface shown to have either a chamfer within 25 to 65 angle x .010 minimum or a .010 R minimum. 10. Optional dimension: Maximum allowable edge break is .015 inch (0.38 mm). 11. Termini qualified to this specification sheet shall meet the performance requirements when inserted into a connector with clip-to-clip dimensions of .756 to .808 inch (19.20 to 20.52 mm). 12. Terminus design shall accommodate a single fiber cable with a maximum diameter of .087 inch (2.2 mm). 13. Ferrule diameter for ceramic: .06246 to .06250 inches (1.5865 to 1.5875 mm), ferrule diameter for metal: .06238 to .06248 inches (1.5824 to 1.5870 mm). 14. For interoperability with a standardized polishing puck, the length of exposed ferrule to the terminus shoulder (end face to the front of the shoulder) shall be 0.262 inch (6.62 mm) minimum. 15. For style 1 and 3 terminus only, reduction of the .225 inch (5.72 mm) minimum length to .025 inch (0.63 mm) is allowed. Additionally there shall be a smooth ramp transition on the terminus between the terminus barrel and the crimp sleeve/heat shrink so as not to restrict the function of the insertion and removal tool during the removal operation. FIGURE 1. Pin terminus - Continued. 2 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Part or identifying number (PIN): See table I of this document and 6.6 of MIL-PRF-29504. M 29504 / 04 -XXXX Military designator Basic specification Specification sheet TICC code (see table I) Usage: Termini compliant with this specification sheet are intended to be used in MIL-DTL-38999 connectors as applicable, may be used in connectors other than MIL-DTL-38999 at the discretion of the acquiring activity. Termini compliant with this specification may not meet all requirements of MIL-DTL38999 if not used in series III connectors. Termini with metal ferrules are intended primarily for legacy systems. REQUIREMENTS: Temperature ranges: o Operating -67F to 329F (-55C to +165 C) Non-operating -40F to 185F (-40C to + 85 C) Storage -40F to 185F (-40C to + 85 C) o o Fabrication procedure. Standard fabrication procedure (for terminus placement/termination onto the end of an optical fiber), including epoxy specified in the procedure, shall be used for test sample terminations. Test sample configurations and fabrication shall be performed as specified in NAVSEA Drawing 8283255. A copy of this document can be obtained at web site: https://fiberoptics.nswc.navy.mil/ in the NAVSEA Drawing section under component Information. Design and construction: Dimensions and configuration: See figure 1 and table I. Pre-polished termini may have either flat or radiused end faces. Regardless of the end face geometry, the terminus shall meet the requirements of this specification when terminated using the procedures specified. Weight: 1.0 gram maximum. 3 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 TABLE I TICC numbers and "A" (ferrule hole) diameter for specified optical fiber sizes. Fiber size (core/cladding) m Single mode < 9/125 1/ Ferrule hole diameter m 125 +1/-0 Ceramic Single mode < 9/125 1/ Single mode < 9/125 1/ Single mode 9/125 1/ Single mode 9/125 1/ Single mode 9/125 1/ 50/125, 62.5/125 125.5 +1/-0 126 +1/-0 125 +1/-0 125.5 +1/-0 126 +1/-0 126 +2/-0 Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic 50/125, 62.5/125 62.5/125/153 62.5/125/155 100/140 100/140 100/140/172 127 +2/-0 156 +3/-0 157 +3/-0 142 +3/-0 145 +3/-0 173 +1/-0 100/140/172 100/140/172 200/230 200/280 400/440 50/125, 62.5/125 62.5/125/155 100/140 100/140/172 200/230 1/ 2/ 3/ Ferrule material Circular run-out m 1 2/ TICC style 1 TICC style 2 TICC style3 4300 4303 4306 1 2/ 1 2/ 1 2/ 1 2/ 1 2/ 2 4301 4302 4207 4208 4209 4210 4304 4305 4217 4218 4219 4220 4307 4308 4265 4266 4267 4268 Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic 2 3 3 4 4 2 4040 4211 4212 4043 4044 4293 4221 4222 4223 4224 4225 4294 4269 4270 4271 4272 4273 4295 173 +3/-0 175 +3/-0 236 +4/-0 286 +4/-0 448 +4/-0 127 +3/-0 157 +3/-0 Ceramic Ceramic Ceramic Ceramic Ceramic Metal 3/ Metal 3/ 4 4 8 8 8 3 3 4087 4213 4214 4215 4216 4226 4227 4228 4229 4230 4231 4232 4274 4275 4276 4277 4278 142 +3/-0 175 +3/-0 236 +4/-0 Metal 3/ Metal 3/ Metal 3/ 4 4 8 4233 4234 4235 Applicable to any single mode core size. Also applicable to any multimode core size when enhanced performance is required and cladding tolerances permit. Circular run-out of 0.5 microns preferred, as it becomes more standard in industry. Termini with metal ferrules are intended primarily for legacy systems. 4 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Cable strain relief capture mechanism. Three styles for a capture mechanism are specified for this terminus design (see table I). Cable strain relief capture mechanism shall not interfere with intended sealing performance of wire grommet seal, a component in the MIL-DTL-38999 connector, or with the functionality of the insertion and removal tools (see table II). Style 1: Captive strength member outside barrel (body) with shrink sleeve. Style 2: Captive strength member inside terminus barrel (body). Style 3: Captive strength member outside terminus barrel (body) with crimp sleeve. The terminus shall meet all the requirements when the crimp sleeve is assembled to the terminus using a crimp die with flats measuring .088 .001 in (2.235 .025 mm) across and .150 inch (3.81 mm) maximum long. The crimp die shall not contain an optional protrusion on either upper or lower die. Tools: See table II. TABLE II. Tools. TOOL PIN Insertion tool M81969/14-03 Removal tool M81969/14-03 Mating terminus: MIL-PRF-29504/5. Circular run-out: Not greater than the value specified in table I. Frequency of terminus end face cleaning. Unless otherwise specified, terminus may be cleaned before or after each test if the connector is demated. Cleaning shall not be performed during the ten successive mates for the insertion loss test. Unless otherwise specified, cleaning may be performed during mating durability before each optical transmittance measurement. Terminus end face cleaning shall be performed for the post optical transmittance measurement after the salt spray test. The optical transmittance measurement is performed after the general cleaning and inspection for corrosion. Cleaning may be performed at other times when degradation in optical performance occurs. Cleaning performed as a corrective action for degraded optical performance shall be noted on the data sheet. Unless otherwise specified, cleaning of the optical end faces is to occur without removal of termini from the connector. Qualification inspection. Inspections and sequence shall be performed as listed in table III. 5 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 TABLE III. Qualification inspections. Test procedure Un-terminated termini Sample size 1/ Size Weight Identification markings Workmanship Circular run-out Terminus retention Terminus cleaning Termini as part of single fiber cable 2/ Cable pullout force 3/ Salt spray Termini in a multiple termini connector 4/ Group 1 5/ Interoperability 6/ Optical Insertion loss (initial) Return loss (single mode only) Group 2 7/ Mating durability Terminus cleaning Return loss (single mode only) Mechanical tests Shock Vibration Insertion loss (verification) Return loss (single mode only) Group 3 7/ Environmental tests Thermal shock Temperature life Insertion loss (verification) Return loss (single mode only) 1/ Sample size shall be sufficient to ensure quantity of termini for inspections as part of a single fiber cable and inspections as an integral part of a multiple fiber connector. 2/ A minimum sample size of 16 pin termini shall be used. 3/ Cable pullout force shall be performed when mated to M29504/05 socket termini. Change in optical transmittance shall be measured during and after the test. 4/ Six (6) test samples (mated connector assemblies, fully populated with termini, consisting of MIL-DTL-38999 shell size 17 series III connectors with inserts containing 8 cavities) shall be used in accordance with test sample configuration in NAVSEA Drawing 8283255. 5/ Four (4) test samples from those in 3/ shall be used for group I inspections except for interoperability. 6 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 TABLE III. Qualification inspections - Continued. 6/ Two (2) separately designated test samples (instead of 3/) shall be used for interoperability testing in accordance with NAVSEA drawing 8283255. 7/ Two (2) sets of test samples from group I (see 4/) shall be used for groups II and III testing. Inspections for un-terminated termini: Test sample configuration. Test fixture for this test shall include MIL-DTL-38999 shell size 17, series III connectors, utilizing both plug and receptacle for retaining the termini during testing. A minimum sample size shall be used to ensure sufficient quantity for termini inspections as part of a single fiber cable and for termini inspections as an integral part of a multiple fiber connector. Identification markings. The Termini Identification Color Coding (TICC) bands shall be marked on the barrel of the termini or use of the allowed alternative markings as stated in footnote 8/ of figure 1. Manufacturer's symbol or trademark shall be in accordance with footnote 8/ of figure 1. The manufacturer shall list the symbol or trademark with SAE in accordance with SAE AIR 1351. Terminus retention. Terminus displacement measurement is not applicable. Test may be used as one operational means to verify acceptable shoulder construction. Terminus engagement and separation force. Test is applicable for counterpart socket terminus (MILPRF-29504/5) with split alignment sleeves. Maintenance aging. Not applicable. Fungus resistance. Not applicable. Inspections for the terminus as part of a single fiber cable: Test sample configuration. Each terminus is to be terminated on one end of a single fiber cable. Cable used is to have provisions compatible with termini strain relief, as applicable. Termini, selected from the group that passed inspections for un-terminated termini, shall be used. A minimum sample size of 16 pin termini and 16 of the applicable counterpart socket termini, selected from the group that passed inspections for un-terminated termini, shall be used. Fiber pull out force. Not applicable (This test is used for terminus configurations with no type of cable strain relief). Cable pull out force. Applicable for terminus configurations with any mechanism for cable strain relief. The change in optical transmittance shall be measured during and after the test for a pin terminus. 7 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Salt spray: Test samples (termini on single fiber cable) shall be tested to TIA-455-16, test condition C. Terminus ferrule may be covered up to half way from the end face to the shoulder with plastic protective (dust) covers. No corrosive effects shall be seen on the external connector parts that would be detrimental to the operation of the connector. No optical degradation shall occur as a result of this test. The criterion for insertion loss verification shall be used to determine if this optical requirement is met. Insertion loss verification, with termini inserted into a MIL-DTL-38999 shell size 17; series III connector, shall be performed both prior to and after the salt spray test. Inspections of termini in a multiple termini connector: Test sample configuration: Four test samples (mated connector assemblies) shall be used for group I inspections except for interoperability. Two of these four mated connector assemblies shall be used for group II inspections and two for group III inspections. Each mated connector assembly shall be comprised of a cable assembly with termini placed into MIL-DTL-38999 shell size 17, series III connectors. These termini/connectors are located in the middle of the cable assembly. Termini, selected from the group that passed inspections for un-terminated termini, shall be used and inserted into MILDTL-38999 shell size 17, series III connector as part of the cable assembly that comprises each test sample. Cable assembly length shall be 10 meters with the connector mated pair inserted 5 meters from the cable ends. Cable length may be longer (with added cable at the optical source end) if cut-backs are performed to verify insertion loss. Each connector shall be fully populated with termini. At least 8 randomly selected termini pairs in each cable assembly shall be monitored for optical transmittance after and when specified, during environmental and mechanical testing. Insertion loss shall be performed on all termini pairs in each cable assembly. Connectors used in the cable assembly, both the plug and receptacle types, are to include backshells. Selection of the backshell is to include assurance of proper strain relief for each single fiber cable and not cause degradation in optical performance. Test sample configurations, fabrication methods and the specific test methods and practices shall be as specified in NAVSEA Drawing 8283255. Interoperability. Applicable, except test for terminus insertion and removal forces is not required. Testing shall be performed using two separately designated cable assemblies with fully populated, MIL-DTL38999, series III, shell size 17 connectors. Test performance and test sample configurations/fabrication shall conform to NAVSEA Drawing 8283255. As part of the interoperability inspection, terminus on the end of single fiber cable, shall be inserted and removed from the connector to verify that the strain relief is compatible with the tools listed in table II. At the discretion of the preparing activity, selected configurations may be specified to undergo inspections for shock, vibration and mating durability. Interoperability is applicable only for termini among vendors with the same TICC (fiber size, ferrule hole diameter, and ferrule material (see table I)) with one addition. Termini shall be interoperable regardless of the style. All termini of the same PIN shall be interoperable with one exception. Terminus shall be interoperable regardless of the style. Qualification by similarity will be given to a terminus in the same row in table I as the terminus tested for interoperability. This qualification by similarity is valid if the only difference between the terminus tested for interoperability and the terminus configuration in the same row in table I is a different cable strain relief capture mechanism and TICC markings. Optical source wavelength. Termini with single mode fiber shall be tested using an optical source at the 1,310 nm wavelength. Termini with multimode fiber can be tested using an optical source at either the 850 nm or the 1,300 nm wavelength. 8 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Launch conditions shall conform to NAVSEA Drawing 8283255. Insertion loss. The initial insertion loss and the insertion loss verification for the various fiber sizes and ferrule materials shall be as specified in table IV. The insertion loss limits specified are the maximum allowed values for each measurement (each mating with respect to the pre-cut back measurement). It is not intended to average the ten matings or use other averaging schemes. TABLE IV. Optical insertion loss performance. 1/ Fiber size (um) Single mode < 9/125 Single mode 9/125 50/125 62.5/125 62.5/125/polyimide 100/140 100/140/polyimide > 100/140 50/125 62.5/125 62.5/125/polyimide 100/140 100/140/polyimide 200/230 Termini in non-tight tolerance M38999 2/ Initial Insertion loss insertion verification loss (dB) (dB) 4/ 1.25 1.75 0.75 1.25 1.50 2.00 1.00 1.50 1.50 2.00 0.75 1.25 1.50 2.00 1.50 2.00 1.50 2.00 1.25 1.75 1.50 2.00 1.25 2.25 1.50 2.50 1.50 2.50 Termini in tight tolerance M38999/60 and M38999/61 3/ Initial Insertion insertion loss verification loss (dB) (dB) 4/ 1.25 1.75 0.75 1.25 1.00 1.50 0.75 1.25 1.00 1.50 0.75 1.25 1.00 1.50 1.25 1.75 1.25 1.75 1.00 1.50 1.25 1.75 1.00 1.50 1.00 1.75 1.00 1.75 Ferrule material Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Metal Metal Metal Metal Metal Metal 1/ Optical loss performance is based on use of specified fabrication procedure. 2/ Termini in a MIL-DTL-38999 connector that is other than MIL-DTL-38999 tight tolerance series III connector (the latter being built to specification sheets MIL-DTL-38999/60 and MIL-DTL-38999/61 specific to fiber optic applications), the former distinguished from the tight tolerance type by denoting as the MIL-DTL-38999 non-tight tolerance connector. 3/ Termini in a MIL-DTL-38999 tight tolerance series III connector (the MIL-DTL-38999/60 and MIL-DTL38999/61 specific to fiber optic applications) for shell sizes 9 through 19. For shell sizes 21 through 25, use performance requirements when termini are used in a MIL-DTL-38999 non-tight tolerance connector. 4/ Insertion loss verification is an insertion loss performed after a series of environmental tests or mechanical tests. Mechanical. The following mechanical tests shall be performed in the sequence listed following the post mating durability, terminus cleaning and return loss tests, mechanical shock and vibration. For single mode termini, a discontinuity is considered to be a reduction of optical transmittance of 0.5 dB or more for a duration of 50 microseconds or more (during vibration) or 100 milliseconds or more (during shock). 9 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Mechanical shock. Mated connector assemblies shall be tested in accordance with the applicable mechanical shock test listed below. Optical discontinuities shall be measured during the test. For connectors of shell sizes 17 and greater, a minimum of four termini shall be monitored for discontinuity. The change in optical transmittance shall be monitored after the test. The termini shall be visually examined after the test to the extent feasible inside the connector. Termini shall not be damaged and there shall be no loosening of parts. The requirement for optical discontinuity shall be met during the test and the requirement for the change in optical transmittance shall be met after the test. For testing, initially mate the connector assemblies and apply the specified torque value. Mark the position after the torque has been applied and check/record position after each impact. For a mating connector containing a coupling ring ratchet mechanism, do not tighten the coupling ring after each impact if the connector is being tested in addition to the terminus. Otherwise, retighten after each impact. a. MIL-S-901. Mated connector assemblies shall be tested in accordance with MIL-S-901, grade A, type B, class I. Standard shock fixture 4A for bulkhead mounting shall be used. Supplement test fixture with mounting shall be performed as specified in NAVSEA Drawing 8283255. b. Half-sine pulse. Mated connector assemblies shall be tested in accordance with TIA-455-14, test condition D. Three shocks in each direction shall be applied along the three mutually perpendicular axes of the test sample (18 shocks). Vibration. Mated connector assemblies shall be tested for sinusoidal vibration in accordance with the applicable vibration tests listed below. Optical discontinuities shall be measured during the test. For connectors of shell sizes 17 and greater, a minimum of four termini shall be monitored for discontinuity. The change in optical transmittance shall be monitored after the test. The termini shall be visually examined after the test to the extent feasible inside the connector. Termini shall not be damaged, and there shall be no loosening of parts, no backing off of the coupling mechanism, and no other damage which can produce physical distortion or wear and may result in fatigue of the mechanical parts. The requirement for optical discontinuity shall be met during the test and the requirement for the change in optical transmittance shall be met after the test. For testing, initially mate the connector assemblies and apply the specified torque value. Mark the position after the torque has been applied and check/record position after each axis. For a mating connector containing a coupling ring ratchet mechanism, do not tighten the coupling ring during testing. Sine vibration shall be performed in accordance with 4.5.23.2.1 of MIL-DTL-38999 (60 G at ambient temperature only). This cycle shall be performed 12 times in each of three mutually perpendicular directions at ambient temperature. This results in a total of 36 cycles being applied for approximately 12 hours. The sequence shall be repeated twice. (36 hours total at ambient temperature). Interruptions are permitted provided the requirements for rate of change and test duration are met. Completion of cycling within any separate band is permissible before proceeding to the next band. Random vibration shall be performed in accordance with 4.5.23.2.3 of MIL-DTL-38999 (41.7 G o rms at a temperature of 125 C). Random vibration shall be performed in accordance with 4.5.23.2.4 of MIL-DTL-38999 (49.5 G rms at an ambient temperature). 10 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Environmental. The following environmental tests shall be performed in the sequence listed: thermal shock, temperature life. Thermal shock. The temperatures of -55C +0C, -5C and 165C +5C, -0C shall be used for the low and high soak temperatures, respectively. Mated connector assemblies shall be tested in accordance with TIA-455-71, schedule C-0 (5 cycles). The mated connector assemblies shall not be un-mated then re-mated after the test as part of the inspection. The change in optical transmittance shall be measured during (towards the end of each soak temperature) and after the test. The termini shall be visually examined after the test only if optical performance is not met. Termini shall not be damaged, and there shall be no loosening of parts, separation of bonded surfaces or other damage detrimental to the operation of the termini. The requirement for the change in optical transmittance shall be met during and after the test. Temperature life. The high exposure temperature shall be 165C +5, -0C. Mated connector assemblies shall be tested in accordance with TIA455.4 for the duration of 1,000 hours at the high exposure temperature. The change in optical transmittance shall be measured after the test. The termini shall be visually examined after the test to the extent feasible inside the connector. Termini shall not be damaged, and there shall be no loosening of parts, separation of bonded surfaces or other damage detrimental to the operation of the termini. The requirement for the change in optical transmittance shall be met after the test. Performance of a cable/fiber retention test is not required as part of the final inspection for this test. Insertion loss (verification): If the cut back method is used after the mechanical or environmental tests are concluded, then return loss may be performed prior to the insertion loss verification. Qualification connector: The qualification connector for this terminus shall be a qualified MIL-DTL38999 connector. Qualification by similarity. a. Qualification of termini for single mode fiber sizes. (1) Qualification inspection shall be performed on termini with a ferrule hole diameter of 126 microns when termini with both 125 (or 125.5) and the 126 micron ferrule hole diameters are offered. Manufacturers who qualify under this specification sheet for the 126 micron ferrule hole diameter are qualified under this specification sheet for the 125 or 125.5 micron ferrule diameter. Qualification inspection shall be performed on the 5.8/125 micron fiber size. (2) Constraint for qualification by similarity case listed above. This qualification by similarity case is valid if the only difference between the qualified termini (single mode 126 micron) and the smaller size termini is a change in the terminus ferrule hole diameter and TICC markings. 11 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 b. c. Qualification of termini for multimode fiber sizes. (1) Complete qualification inspection shall be performed on termini with optical fiber having a cladding diameter of 125 microns. Termini shall have a ferrule hole diameter of 126 +1, -0 microns. Manufacturers who qualify under this specification sheet for the terminus with the 126 +1, -0 micron ferrule hole diameter are qualified under this specification sheet for the other 125 cladding hole diameters for use with multimode fiber sizes. Manufacturers who qualify under this specification sheet for the terminus with the 126 +1, -0 micron ferrule hole diameter are qualified under this specification sheet for the other (i.e., polyimide) hole diameters for use with multimode 50/125 or 62.5/125 micron fiber sizes. (2) 100/140 fiber size. Manufacturers who qualify under this specification sheet for the termini with the multimode, 50/125 or 62.5/125 micron fiber size and pass the insertion loss and size inspections are qualified under this specification sheet for the 100/140 micron fiber size. Qualification inspection for the 100/140 micron fiber size shall be performed on termini with a ferrule hole diameter of 173 +3, -0 microns to cover the case for terminations of termini onto polyimide coated fiber. Manufacturers who qualify under this specification sheet for the terminus with the 173 +3, -0 micron ferrule hole diameter are qualified under this specification sheet for the other 100/140 hole diameters for use with multimode fiber sizes (both non-polyimide and polyimide). (3) Multiple fiber sizes, same ferrule hole diameter. Manufacturers who qualify under this specification sheet for termini with the 50/125 micron fiber size are qualified under this specification sheet for the 62.5/125 micron fiber size. Qualification inspection shall be performed on termini with a ferrule hole diameter of 126 +1, -0 microns. (4) Sizes larger than 100/140 fiber. Manufacturers who qualify under this specification sheet for the termini with the multimode, 100/140 micron fiber size or less are qualified under this specification sheet for the termini with larger fiber sizes. (5) Metal ferrule sizes. Manufacturers who qualify under this specification sheet for the termini single mode and for multimode fiber sizes with ceramic ferrules and perform the full qualification inspection for the 100/140/172 fiber size using a 175 +3, -0 ferrule hole diameter and the size and insertion loss inspections for the 62.5/125/155 fiber size using the 157 +3, -0 ferrule hole diameter are qualified under this specification sheet for the other ferrule hole diameters with multimode fiber. (6) Constraint for qualification by similarity cases listed above. These qualification by similarity cases are valid if the only difference between the qualified termini and the larger size termini being offered is a change in the terminus ferrule hole diameter and TICC markings. Qualification of termini for different cable strain relief capture mechanisms. (1) Qualification inspection shall be performed on termini for the smallest fiber size and with the largest hole diameter being offered. 12 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 (2) Manufacturers who qualify under this specification sheet for termini with one style of cable strain relief capture mechanism and pass the insertion loss, cable pullout, thermal shock, temperature life and insertion and removal force verification are qualified under this specification sheet for a different cable strain relief capture mechanism. Insertion and removal verification of the termini to and from the connector shall be performed, with the termini on the ends of single fiber cable; to verify that strain relief is compatible with tools in table II. (3) Constraint for qualification by similarity case listed above. This qualification by similarity case is valid if the only difference between the qualified termini and the termini undergoing qualification is a different cable strain relief capture mechanism and TICC markings. d. Qualification of termini for change in design or material. (1) Perform complete re-qualification. Cleaning prior to packaging. Termini shall be cleaned prior to packaging/shipment internally (for ensuring proper adherence of epoxy to terminus barrel (body) and ferrule and externally (for minimizing contamination). PIN cross reference list. M29504/4 will no longer be built nor qualified. The preferred and nonpreferred markings are shown in table V, these termini are directly interchangeable. The M29504/04 will be used in place of M29504/4. M29504/4 and M29504/04 are structurally identical. The preferred part number is M29504/04. TABLE V. PIN cross reference. Non-preferred PIN Preferred PIN M29504/4 M29504/04 Referenced documents. In addition to MIL-PRF-29504, this specification sheet references the following documents MIL-PRF-29504/5 MIL-S-901 TIA-455-14 MIL-DTL-38999 NAVSEA drawing 8283255 TIA-455-16 MIL-DTL-38999/60 SAE AIR 1351 TIA-455-71 MIL-DTL-38999/61 TIA455.4 13 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use. MIL-PRF-29504/4D w/AMENDMENT 2 Changes from previous issue: The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. CONCLUDING MATERIAL Custodians: Army - CR Navy - SH Air Force - 85 DLA - CC Preparing activity: DLA - CC (Project 6060-2015-001) Review activities: Navy - AS Air Force - 13, 19, 93, 99 NASA - NA NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https://assist.dla.mil/. 14 Source: http://assist.dla.mil -- Downloaded: 2021-04-29T16:47Z Check the source to verify that this is the current version before use.