MIL-DTL-38999 Features and Application Series II Features and Application Closed-Entry Socket Insert - Hard dielectric socket face has lead-in chamfers for positive alignment of pins (even partially bent within pre-established limits) with sockets. MIL-DTL- 38999 S II MIL-DTL-38999 Series II connectors feature a bayonet coupling mechanism with lower profile design and rear-removable crimp contact retention system. Interfacial Pin Insert Seal - Raised moisture barriers around each pin, which mate into lead-in chamfers of hard face socket insert, provide individual contact sealing. Interfacial seal is never touched by service tools. These connectors were designed for military and commercial applications where the prime requirements are lower profile and lighter weight. Elastomer Wire Sealing Grommet - Sealing over a wide range of wire diameters is assured by a triple wire seal in each cavity at the rear of the connector. Reduction of both size and weight were achieved through the use of thinner shell walls and length restrictions. These design restrictions reduced the RFI attenuation characteristics and the "scoop" protection, while yielding an excellent general purpose, lightweight connector. Compared to Series I, Series II connectors achieve up to 20% reduction in mated pair length, up to 39% reduction in outside diameter and up to 40% reduction in weight (128 pin mated pair). Superior Contact Stability - Rear release crimp contact system features a stamped beryllium-copper retaining clip captivated by molded-in shoulders of each contact cavity in the insulator. A rear-inserted M81969 plastic tool expands the tines beyond the shoulder, releasing the contact. Shell Polarization - Alternate key/keyway positions prevent cross mating of adjacent connectors having same insert arrangement. This family of connectors is offered in six receptacle-mounting styles. They include square flange receptacles, for both front and rear panel (wall) mounting; square flange receptacles, for both front and rear panel (box) mounting; square flange receptacle with extended grommet, for front of panel (box) mounting; and jam nut receptacles which incorporate "O" ring seals, designed for rear panel "D" hole mounting. Plugs are available in two designs, with and without RFI grounding. Fifty-two insert arrangement per MIL-STD-1560 are tooled and qualified to MIL-DTL-38999 Series II, utilizing 3 to 128 M39029 contacts. Contacts come in sizes 22D, 22M, 22, 20, 16 and 12, terminating wire sizes from 28 to 12 gauge. These connectors are available in wide range of shell materials and finishes. Aluminum shells are offered in electroless nickel, bright cadmium, anodized, and olive drab cadmium. Other finishes such as zinc nickel are available upon request to commercial callouts only. In addition, we offer passivated stainless steel shells with standard environment-resisting inserts (commercial callouts only). Universal I/R Tool - A single, expendable plastic tool is used for both insertion and removal of contacts. www.conesys.com - 20 - sales@aero-electric.com MIL-DTL-38999 Performance Specifications Series II Performance Specifications Operating Temperature Range Finish B: -65C to +175C (-85F to +347F) Finishes C and F: -65C to +200C (-85F to +392F) Finish A: -65C to +150C (-85F to 302F) Material and Plating Data (Finish) B - aluminum shell, olive drab cadmium over nickel base C - aluminum shell, black anodized finish F - aluminum shell, electroless nickel finish A - aluminum shell, silver to light iridescent yellow color (bright) cadmium over electroless nickel base Shielding Effectiveness RFI and EMI attenuation at the specified frequencies meet the requirements of MIL-DTL-38999. RFI shielding effectiveness of mated connectors with RFI backshells is measured in a triaxial radio frequency leakage fixture. EMI shielding effectiveness is measured at the interface of mated connectors and tested by the mode-stirred technique specified in method 3008 of MIL-STD-1344. Corrosion Resistance Finishes A, B and C withstand 500-hour salt spray. Finish F withstands 48-hour salt spray. Shock and Vibration Requirements Wired, mated connectors shall not be damaged, nor shall there be a current interruption longer than one microsecond when subjected to the following: Durability Mated connectors withstand a minimum of 250 mating cycles for RFI plug (MS27484) and 500 cycles for MS27473 and MS27500 plugs. Standard Shock Mated connectors withstand a pulse of approximate half sine wave of 300 G magnitude with duration of three milliseconds applied in three axes per MIL-STD-1344, method 2004. Environmental Seal Wired, mated connectors with specified accessories attached, shall meet the altitude-immersion test specified by MIL-DTL-38999. Fluid Resistance Connectors resist specified immersions in MIL-PRF-7808, MIL-PRF-23699, MIL-PRF-5606, M2-V Chevron oil, Coolanol 25, MIL-DTL-83133 (JP-8), MIL-DTL-5624 (JP-4, JP-5), SAE-AMS1424 Type I, and other solvents and cleaning agents. Vibration Mated connectors withstand the following vibration levels: Random vibration per MIL-STD-1344, method 205 test condition VI, Letter "J". Voltage Rating Suggested Operating Voltage Test Voltage Test Voltage Test Voltage Test Voltage (Sea Level) Sea Level 50,000 Ft. 70,000 Ft. 100,000 Ft. Service Rating AC (RMS) DC V RMS V RMS V RMS V RMS M 400 550 1300 550 350 200 N 300 450 1000 400 260 200 I 600 850 1800 600 400 200 II 900 1250 2300 800 500 200 Note: The establishment of electrical safety factors is left entirely to the designer, as he is in the best position to know www.conesys.com exactly what peak voltages, switching currents, transients, etc., can be expected in a particular circuit. - 21 - sales@aero-electric.com MIL-DTL- 38999 S II Shell-to-Shell Conductivity Maximum potential drop shall not exceed: With RFI spring fingers, finish F = 1.0 millivolt, while finishes A and B = 2.5 millivolts. Without spring fingers = 200 millivolts. Finish C = nonconductive. MIL-DTL-38999 Part Number Development Series II Military and Aero-Electric Part Number Development Mil. Prefix Aero Prefix MS AE 27473 273 T T 12 12 B B 35 35 P P A A -340 MIL-DTL- 38999 S II Shell Type 27472 = Front, wall mount receptacle = 272 (Aero p/n) 27473 = Straight plug = 273 (Aero p/n) 27474 = Jam nut receptacle = 274 (Aero p/n) 27484 = RFI grounding plug = 284 (Aero p/n) 27497 = Rear, wall mount receptacle = 297 (Aero p/n) 27499 = Front, box mount receptacle = 299 (Aero p/n) 27500 = Standard plug with 90 backshell = 200 (Aero p/n) 27508 = Rear, box mount receptacle = 208 (Aero p/n) 27513 = Front, box mount rec. (long grommet) = 213 (Aero p/n) Class T = With accessory thread (MS27472, 27473, 27474, 27484 & 27497) E = Same as T in line above except connector is kitted with E-Nut = No accessory thread, box mount (MS27499 & MS27508) = No accessory thread, box mount, long grommet (MS27513) P = Supplied with ring and potting boot (same shell types as "T" class) Shell Size 8, 10, 12, 14, 16, 18, 20, 22 or 24 Finish (Material & Plating) A = Aluminum shell, silver to light iridescent yellow (bright) cadmium over electroless nickel base B = Aluminum shell, olive drab cadmium over electroless nickel base C = Aluminum shell, black anodized finish (not available in MS27484) F = Aluminum shell, electroless nickel finish E = Stainless steel shell, passivated (Aero p/n only, n/a in AE284) Insert Arrangement See page 15 thru 19 Contact Designator P = Pin A = Pin connector less pins (with intent to use non-std pin contacts) S = Socket B = Socket connector less sockets (with intent to use non-std socket contacts) Polarization (Keying) N = Normal (Omitted in part number) A, B, C, or D (B & C keyways are not available in shell size 8) Modification (applies to Aero part numbers only) 01 = Less contacts (is not marked on the part) 340 = Connector kitted with M85049/27-XXX E-nut 341 = Connector kitted with M85049/49-2-XXX straight clamp 342 = Connector kitted with M85049/47XXX right angle clamp Consult factory for other modifications Note 1: Each connector is furnished with contacts unless ordered less contacts (L/C) as follows: One spare contact for inserts requiring 2 through 26 of each contact and two spares for inserts with 27 or more contacts, and a minimum of one sealing plug up to 10% of the number contacts. One insertion/extraction tool for each contact size is also included. www.conesys.com Note 2: Proper part number marking has no "0" in front of single digit shell size (8) and no "0" in front of single digit layout. Example of each: J MS27472T8B35S and J MS27472T10B5S. In both "N" for normal is omitted. Please note that JAN or J marking is required immediately in front of MS number. - 22 - sales@aero-electric.com MS27472 Front, Wall Mounting Receptacle AE272 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight D MAX A MIL-DTL- 38999 S II .069(1.75) .058(1.47) .322(8.18) .317(8.05) MAX B MASTER KEYWAY .219(5.56) MIN FULL THREAD K GROMMET EXTENSION [H [E MAX GROMMET G NO. OF TEETH BLUE COLOR BAND 4x [ C Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 F ACCESSORY THREAD 4 MINOR KEYWAYS Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A B C Maximum (TP) +.010 -.005 +.25 -.13 D E Maximum .003 F G H K .08 Accessory Thread No. of Teeth Maximum Grommet Extension Shell Size inch mm inch mm inch mm inch mm inch mm UNEF-2A inch mm inch mm 8 .828 21.03 .594 15.09 .120 3.05 .932 23.67 .471 11.96 7/16-28 12 .299 7.59 .150/.090 3.81/2.29 10 .954 24.23 .719 18.26 .120 3.05 .932 23.67 .588 14.94 9/16-24 16 .427 10.85 .150/.090 3.81/2.29 12 1.047 26.59 .812 20.62 .120 3.05 .932 23.67 .748 19.00 11/16-24 20 .541 13.74 .150/.090 3.81/2.29 14 1.141 28.98 .906 23.01 .120 3.05 .932 23.67 .873 22.17 13/16-20 24 .666 16.92 .150/.090 3.81/2.29 16 1.234 31.34 .969 24.61 .120 3.05 .932 23.67 .998 25.35 15/16-20 28 .791 20.09 .150/.090 3.81/2.29 18 1.328 33.73 1.062 26.97 .120 3.05 .932 23.67 1.123 28.52 1-1/16-18 32 .897 22.78 .150/.090 3.81/2.29 20 1.453 36.91 1.156 29.36 .120 3.05 .932 23.67 1.248 31.70 1-3/16-18 36 1.022 25.96 .150/.090 3.81/2.29 22 1.578 40.08 1.250 31.75 .120 3.05 .932 23.67 1.373 34.87 1-5/16-18 40 1.147 29.13 .150/.090 3.81/2.29 24 1.703 43.26 1.375 34.93 .147 3.73 1.000 25.40 1.498 38.05 1-7/16-18 44 1.272 32.31 .140/.040 3.56/1.02 www.conesys.com - 23 - sales@aero-electric.com MS27497 Rear, Wall Mounting Receptacle AE297 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight D MAX A .447(11.35) .442(11.23) MAX MIL-DTL- 38999 S II .069(1.75) .058(1.47) B MASTER KEYWAY .219(5.56) MIN FULL THREAD K GROMMET EXTENSION [H [E MAX GROMMET MAX G NO. OF TEETH BLUE COLOR BAND 4x [ C F ACCESSORY THREAD 4 MINOR KEYWAYS Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A B C Maximum (TP) +.010 -.005 +.25 -.13 Note: See page 33 for panel thickness. D E F G H K Maximum Maximum Accessory Thread No. of Teeth Maximum Grommet Extension Shell Size inch mm inch mm inch mm inch mm inch mm UNEF-2A 8 .828 21.03 .594 15.09 .120 3.05 .988 25.10 .547 13.89 7/16-28 12 inch mm inch mm .299 7.59 .150/.090 3.81/2.29 10 .954 24.23 .719 18.26 .120 3.05 .988 25.10 .672 17.07 9/16-24 16 .427 10.85 .150/.090 3.81/2.29 12 1.047 26.59 .812 20.62 .120 3.05 .988 25.10 .844 21.44 11/16-24 20 .541 13.74 .150/.090 3.81/2.29 14 1.141 28.98 .906 23.01 .120 3.05 .988 25.10 .969 24.61 13/16-20 24 .666 16.92 .150/.090 3.81/2.29 16 1.234 31.34 .969 24.61 .120 3.05 .988 25.10 1.094 27.79 15/16-20 28 .791 20.09 .150/.090 3.81/2.29 18 1.328 33.73 1.062 26.97 .120 3.05 .988 25.10 1.219 30.96 1-1/16-18 32 .897 22.78 .150/.090 3.81/2.29 20 1.453 36.91 1.156 29.36 .120 3.05 .988 25.10 1.344 34.14 1-3/16-18 36 1.022 25.96 .150/.090 3.81/2.29 22 1.578 40.08 1.250 31.75 .120 3.05 .988 25.10 1.469 37.31 1-5/16-18 40 1.147 29.13 .150/.090 3.81/2.29 24 1.703 43.26 1.375 34.93 .147 3.73 1.056 26.82 1.594 40.49 1-7/16-18 44 1.272 32.31 .140/.040 3.56/1.02 www.conesys.com - 24 - sales@aero-electric.com MS27499 Front, Box Mounting Receptacle AE299 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight .763(19.38) MAX A MAX .069(1.75) .058(1.47) .322(8.18) .317(8.05) MIL-DTL- 38999 S II B MASTER KEYWAY .312(7.92) MAX .060(1.52) MAX GROMMET EXTENSION [H [E 4x [ C Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 [F MAX MAX GROMMET BLUE COLOR BAND 4 MINOR KEYWAYS Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A B Maximum (TP) C E F H +.010 -.005 +.25 -.13 .003 .08 mm inch mm inch mm inch mm inch mm .594 15.09 .120 3.05 .471 11.96 .453 11.51 .299 7.59 .719 18.26 .120 3.05 .588 14.94 .578 14.68 .427 10.85 Shell Size inch mm inch 8 .828 21.03 10 .954 24.23 Maximum Maximum 12 1.047 26.59 .812 20.62 .120 3.05 .748 19.00 .703 17.86 .541 13.74 14 1.141 28.98 .906 23.01 .120 3.05 .873 22.17 .828 21.03 .666 16.92 16 1.234 31.34 .969 24.61 .120 3.05 .998 25.35 .953 24.21 .791 20.09 18 1.328 33.73 1.062 26.97 .120 3.05 1.123 28.52 1.062 26.97 .897 22.78 20 1.453 36.91 1.156 29.36 .120 3.05 1.248 31.70 1.188 30.18 1.022 25.96 22 1.578 40.08 1.250 31.75 .120 3.05 1.373 34.87 1.312 33.32 1.147 29.13 24 1.703 43.26 1.375 34.93 .147 3.73 1.498 38.05 1.438 36.53 1.272 32.31 www.conesys.com - 25 - sales@aero-electric.com MS27508 Rear, Box Mounting Receptacle AE208 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight .757(19.23) MAX A .447(11.35) .442(11.23) MAX MIL-DTL- 38999 S II .250(6.35) MAX B MASTER KEYWAY .069(1.75) .058(1.47) .322(8.18) .317(8.05) [F .060(1.52) MAX GROMMET EXTENSION [H [E MAX [F GROMMET MAX MAX BLUE COLOR BAND 4x [ C 4 MINOR KEYWAYS Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A B Maximum (TP) Note: See page 33 for panel thickness. C E F H +.010 -.005 +.25 -.13 .003 .08 mm inch mm inch mm inch mm inch mm .594 15.09 .120 3.05 .471 11.96 .547 13.89 .299 7.59 .719 18.26 .120 3.05 .588 14.94 .672 17.07 .427 10.85 Shell Size inch mm inch 8 .828 21.03 10 .954 24.23 Maximum Maximum 12 1.047 26.59 .812 20.62 .120 3.05 .748 19.00 .844 21.44 .541 13.74 14 1.141 28.98 .906 23.01 .120 3.05 .873 22.17 .969 24.61 .666 16.92 16 1.234 31.34 .969 24.61 .120 3.05 .998 25.35 1.094 27.79 .791 20.09 18 1.328 33.73 1.062 26.97 .120 3.05 1.123 28.52 1.219 30.96 .897 22.78 20 1.453 36.91 1.156 29.36 .120 3.05 1.248 31.70 1.344 34.14 1.022 25.96 22 1.578 40.08 1.250 31.75 .120 3.05 1.373 34.87 1.469 37.31 1.147 29.13 24 1.703 43.26 1.375 34.93 .147 3.73 1.498 38.05 1.594 40.49 1.272 32.31 www.conesys.com - 26 - sales@aero-electric.com MS27513 Long Grommet, Front, Box Mount Receptacle AE213 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight .907(23.04) MAX A MAX B .516(13.11) MAX .322(8.18) .317(8.05) .312(7.92) MAX [H [E MAX GROMMET MIL-DTL- 38999 S II MASTER KEYWAY .069(1.75) .058(1.47) [F MAX BLUE COLOR BAND 4x [ C 4 MINOR KEYWAYS Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A B Maximum (TP) C E F H +.010 -.005 +.25 -.13 .003 .08 mm inch mm inch mm inch mm inch mm .594 15.09 .120 3.05 .471 11.96 .453 11.51 .299 7.59 .719 18.26 .120 3.05 .588 14.94 .578 14.68 .427 10.85 Shell Size inch mm inch 8 .828 21.03 10 .954 24.23 Maximum Maximum 12 1.047 26.59 .812 20.62 .120 3.05 .748 19.00 .703 17.86 .541 13.74 14 1.141 28.98 .906 23.01 .120 3.05 .873 22.17 .828 21.03 .666 16.92 16 1.234 31.34 .969 24.61 .120 3.05 .998 25.35 .953 24.21 .791 20.09 18 1.328 33.73 1.062 26.97 .120 3.05 1.123 28.52 1.062 26.97 .897 22.78 20 1.453 36.91 1.156 29.36 .120 3.05 1.248 31.70 1.188 30.18 1.022 25.96 22 1.578 40.08 1.250 31.75 .120 3.05 1.373 34.87 1.312 33.32 1.147 29.13 24 1.703 43.26 1.375 34.93 .147 3.73 1.498 38.05 1.438 36.53 1.272 32.31 www.conesys.com - 27 - sales@aero-electric.com MS27474 Jam Nut Receptacle AE274 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight D G MAX. MASTER KEYWAY A MIL-DTL- 38999 S II .105(2.67) .084(2.13) "O" RING SS 8-22 .150(3.81) .090(2.29) GROMMET SS 24 .140(3.56) EXTENSION .040(1.02) B [J [F MAX GROMMET FLAT H NO. OF TEETH M ACCESSORY THREAD HEX NUT PER MS3186 E THREAD 3 BAYONET PINS 4 MINOR KEYWAYS BLUE COLOR BAND PANEL THICKNESS .109(2.77) .062(1.57) Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A B D +.03 -.15 E F H J M Maximum No. of Teeth Maximum Accessory Thread .13 +.001 -.006 inch mm inch mm inch mm inch mm inch mm inch mm UNEF-2A .438 11.13 .817 20.75 1.250 31.75 7/8-20UNEF .471 11.96 .937 23.80 12 .299 7.59 7/16-28 .438 11.13 .941 23.90 1.375 34.93 1-20UNEF .588 14.94 .937 23.80 16 .427 10.85 9/16-24 Shell Size .005 8 10 .016 .41 Jam Nut Thread Class 2A .003 G .08 12 .438 11.13 1.065 27.05 1.500 38.10 1-1/8-18UNEF .748 19.00 .937 23.80 20 .541 13.74 11/16-24 14 .438 11.13 1.190 30.23 1.625 41.28 1-1/4-18UNEF .873 22.17 .937 23.80 24 .666 16.92 13/16-20 16 .438 11.13 1.320 33.53 1.781 45.24 1-3/8-18UNEF .998 25.35 .937 23.80 28 .791 20.09 15/16-20 18 .438 11.13 1.440 36.58 1.890 48.01 1-1/2-18UNEF 1.123 28.52 .937 23.80 32 .897 22.78 1-1/16-18 20 .464 11.79 1.565 39.75 2.016 51.21 1-5/8-18UNEF 1.248 31.70 .931 23.65 36 1.022 25.96 1-3/16-18 22 .464 11.79 1.690 42.93 2.140 54.36 1-3/4-18UNS 1.373 34.87 .931 23.65 40 1.147 29.13 1-5/16-18 24 .464 11.79 1.815 46.10 2.265 57.53 1-7/8-16UN 1.498 38.05 .984 24.99 44 1.272 32.31 1-7/16-18 www.conesys.com - 28 - sales@aero-electric.com MS27473 Straight Plug AE273 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight G [ F MAX COUPLING NUT MAX MASTER KEY E ACCESSORY THREAD BLUE COLOR BAND MIL-DTL- 38999 S II H GROMMET EXTENSION [A [C MIN SHELL MAX GROMMET D NO. OF TEETH 4 MINOR KEYS Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A C D E F G H Minimum Maximum No of Teeth Accessory Thread Maximum Maximum Grommet Extension Shell Size inch mm inch mm UNEF-2A inch mm inch mm inch mm 8 .337 8.56 .299 7.59 12 7/16-28 .750 19.05 .916 23.27 .150/.090 3.81/2.29 10 .465 11.81 .427 10.85 16 9/16-24 .859 21.82 .916 23.27 .150/.090 3.81/2.29 12 .557 14.15 .541 13.74 20 11/16-24 1.031 26.19 .916 23.27 .150/.090 3.81/2.29 14 .702 17.83 .666 16.92 24 13/16-20 1.156 29.36 .916 23.27 .150/.090 3.81/2.29 16 .827 21.01 .791 20.09 28 15/16-20 1.281 32.54 .916 23.27 .150/.090 3.81/2.29 18 .927 23.55 .897 22.78 32 1-1/16-18 1.406 35.71 .916 23.27 .150/.090 3.81/2.29 20 1.052 26.72 1.022 25.96 36 1-3/16-18 1.531 38.89 .916 23.27 .150/.090 3.81/2.29 22 1.177 29.90 1.147 29.13 40 1-5/16-18 1.641 41.68 .916 23.27 .150/.090 3.81/2.29 24 1.302 33.07 1.272 32.31 44 1-7/16-18 1.766 44.86 .984 24.99 .140/.040 3.56/1.02 www.conesys.com - 29 - sales@aero-electric.com MS27484 RFI Grounding Plug AE284 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight G [ F MAX MAX COUPLING NUT BLUE COLOR BAND MASTER KEY E UNEF-2A MIL-DTL- 38999 S II R.F.I. GROUNDING SPRING ACCESSORY THREAD H GROMMET EXTENSION [A [C MIN SHELL MAX GROMMET D NO. OF TEETH 4 MINOR KEYS Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A C D E F G H Minimum Maximum No of Teeth Accessory Thread Maximum Maximum Grommet Extension Shell Size inch mm inch mm UNEF-2A inch mm inch mm inch mm 8 .337 8.56 .299 7.59 12 7/16-28 .750 19.05 .916 23.27 .150/.090 3.81/2.29 10 .465 11.81 .427 10.85 16 9/16-24 .859 21.82 .916 23.27 .150/.090 3.81/2.29 12 .557 14.15 .541 13.74 20 11/16-24 1.031 26.19 .916 23.27 .150/.090 3.81/2.29 14 .702 17.83 .666 16.92 24 13/16-20 1.156 29.36 .916 23.27 .150/.090 3.81/2.29 16 .827 21.01 .791 20.09 28 15/16-20 1.281 32.54 .916 23.27 .150/.090 3.81/2.29 18 .927 23.55 .897 22.78 32 1-1/16-18 1.406 35.71 .916 23.27 .150/.090 3.81/2.29 20 1.052 26.72 1.022 25.96 36 1-3/16-18 1.531 38.89 .916 23.27 .150/.090 3.81/2.29 22 1.177 29.90 1.147 29.13 40 1-5/16-18 1.641 41.68 .916 23.27 .150/.090 3.81/2.29 24 1.302 33.07 1.272 32.31 44 1-7/16-18 1.766 44.86 .984 24.99 .140/.040 3.56/1.02 www.conesys.com - 30 - sales@aero-electric.com MS27500 Plug with 90 Backshell AE200 Bayonet Coupling, Crimp Removable, Rear Release, Low Profile/Light Weight [ F MAX COUPLING NUT BLUE COLOR BAND MASTER KEY MIL-DTL- 38999 S II [A MIN Y W 4 MINOR KEYS L MAX Page 22 Page 34 Pages 17-19 Page 21 Pages 15, 16 Page 32 Completed Part Number Contacts, Sealing Plugs and Tools Insert Arrangements Performance Specifications Insert Availability and Contact Information Polarization A F Minimum L Maximum W Maximum Y Maximum Maximum Shell Size inch mm inch mm inch mm inch mm inch mm 8 .337 8.56 .750 19.05 1.859 47.22 1.000 25.40 .828 21.03 10 .465 11.81 .859 21.82 1.859 47.22 1.032 26.21 .891 22.63 12 .557 14.15 1.031 26.19 1.938 49.23 1.094 27.79 1.016 25.81 14 .702 17.83 1.156 29.36 2.125 53.98 1.219 30.96 1.141 28.98 16 .827 21.01 1.281 32.54 2.281 57.94 1.281 32.54 1.255 31.88 18 .927 23.55 1.406 35.71 2.312 58.72 1.344 34.14 1.469 37.31 20 1.052 26.72 1.531 38.89 2.375 60.33 1.375 34.93 1.550 39.37 22 1.177 29.90 1.641 41.68 2.531 64.29 1.438 36.53 1.675 42.55 24 1.302 33.07 1.766 44.86 2.828 71.83 1.719 43.66 1.800 45.72 www.conesys.com - 31 - sales@aero-electric.com MIL-DTL-38999 Polarization Series II Keying Positions MIL-DTL- 38999 S II NORMAL C N A MASTER KEYWAY B D 10 DATUM F Notes: 1. Mating face of receptacle shown (plug is opposite). 2. The master keyway (key) has various positions relative to DATUM F; the minor keyways (keys) remain fixed as shown. In the Normal position, the master keyway (key) is 100 from DATUM F. 3. The angles for a given connector are the same whether it contains pin or socket inserts. 4. The insert arrangement does not rotate relative to master keyway (key). Keying Positions BSC Shell Size N A B C D 8 100 82 - - 118 10 100 86 72 128 114 12 100 80 68 132 120 14 100 79 66 134 121 16 100 82 70 130 118 18 100 82 70 130 118 20 100 82 70 130 118 22 100 85 74 126 115 24 100 85 74 126 115 www.conesys.com - 32 - sales@aero-electric.com MIL-DTL-38999 Series II Flange and Jam Nut Receptacles Panel Cutouts Panel Cutouts JAM NUT FLANGE MOUNT D MAX PANEL THICKNESS MIL-DTL- 38999 S II 4x [ C .109(2.77) .062(1.57) PANEL THICKNESS [B MIN F [E A Note 1: Flange Mounting Dimensions ( B cutout and D MAX) listed only for back of panel mounting (MS27497 and MS27508). Note 2: D MAX includes mounting hardware. Flange and Jam Nut Mounting Dimensions A B C (TP) Minimum .005 D .13 E Maximum Shell Size inch mm inch mm inch mm inch mm 8 .594 15.09 .557 14.15 .128 3.25 .146 3.71 10 .719 18.26 .682 17.32 .128 3.25 .146 3.71 F +.25 -.00 +.000 -.010 inch mm inch mm .885 22.48 .830 21.08 1.010 25.65 .955 24.26 +.010 -.000 +.00 -.25 12 .812 20.62 .854 21.69 .128 3.25 .146 3.71 1.135 28.83 1.085 27.56 14 .906 23.01 .979 24.87 .128 3.25 .146 3.71 1.260 32.01 1.210 30.73 16 .969 24.61 1.104 28.04 .128 3.25 .146 3.71 1.385 35.18 1.335 33.91 18 1.062 26.97 1.229 31.22 .128 3.25 .146 3.71 1.510 38.35 1.460 37.08 20 1.156 29.36 1.354 34.39 .128 3.25 .168 4.27 1.635 41.53 1.585 40.26 22 1.250 31.75 1.479 37.57 .128 3.25 .168 4.27 1.760 44.70 1.709 43.42 24 1.375 34.93 1.604 40.74 .154 3.91 .168 4.27 1.885 47.88 1.835 46.61 www.conesys.com - 33 - sales@aero-electric.com MIL-DTL-38999 Contacts, Tools and Seal Plugs Series II Contacts, Plastic Insertion/Removal Tools and Seal Plugs Application Pin Contacts Socket Contacts Seal Plugs Insertion/Removal Tools Type Military No. Military No. Military No. Military No. 22D Power/Signal M39029/58-360 M39029/57-354 22M* Power/Signal M39029/58-361 M39029/57-355 22* Power/Signal M39029/58-362 M39029/57-356 20 Power/Signal M39029/58-363 M39029/57-357 16 Power/Signal M39029/58-364 M39029/57-358 Coax M39029/76-424 M39029/78-432 Power/Signal M39029/58-365 Plastic Contact Size MIL-DTL- 38999 S II 16 Coax 12 M81969/14-01 MS27488-22-1 -- MS27488-20-1 M81969/14-10 MS27488-16-1 M81969/14-03 M39029/57-359 MS27488-12-1 M81969/14-04 Positioner Positioner Insertion Tool Extraction Tool Crimping and Metal Insertion/Extraction Tools Crimp Tool Contact Size/Type For Pin Contacts For Socket Contacts Metal Metal Military No. Military No. Military No. Military No. Military No. 22D, 22M* M22520/2-01 M22520/2-09 M22520/2-06 M81969/8-01 M81969/8-02 22* M22520/2-01 M22520/2-09 M22520/2-06 M81969/8-03 M81969/8-04 M22520/1-01 M22520/1-04 M22520/1-04 M22520/2-01 M22520/2-10 M22520/2-10 M81969/8-05 M81969/8-06 16 M22520/1-01 M22520/1-04 M22520/1-04 16 Coax Inner M22520/2-01 M22520/2-35 M22520/2-35 M81969/8-07 M81969/8-08 16 Coax Outer M22520/4-01 M22520/4-02 M22520/4-02 12 M22520/1-01 M22520/1-04 M22520/1-04 M81969/8-09 M81969/8-10 20 Contact and Wire Data Test Current Voltage DC Test Max. Drop Well Dia. Amps Millivolts inch inch mm AWG mm2 inch mm inch mm 5.0 73 .0345 .0010 .141 3.58 28-22 .08-.33 .030 .76 .054 1.37 Contact Size 22D Crimp Well Data Wire Range Minimum Well Dept Finished Wire Range Minimum Maximum 22M* 3.0 45 .028 .001 .141 3.58 28-24 .08-.20 .030 .76 .050 1.27 22* 5.0 73 .0365 .0010 .141 3.58 26-22 .13-.33 .034 .86 .060 1.52 20 7.5 55 .047 .001 .209 5.31 24-20 .20-.52 .040 1.02 .083 2.11 16 13.0 49 .067 .001 .209 5.31 20-16 .52-1.31 .065 1.65 .109 2.77 12 23.0 42 .100 .002 .209 5.31 14-12 2.08-3.31 .097 2.46 .142 3.61 * Inactive for new design Note 1: Test Current and Maximum Voltage Drop when tested with silver-plated wire at 25C. www.conesys.com Note 2: Size 16 coax contacts purchased in bulk. - 34 - sales@aero-electric.com MIL-DTL-38999 Contact Installation Instructions Series II Contact Installation Instructions 3. Place the correct insertion tool on the contact so that the wire runs along the groove in the tool. (Tool tip will butt against the shoulder.) Hold the plug or receptacle body firmly. 4. Beginning with a center cavity, insert the contact into the insulator with a slow, even pressure until the contact snaps into position. Make sure the contact and tool are held perpendicular to the face of the insert during the contact installation or the grommet could be damaged. 2. Cycle the tool to be sure the indentors are open. 3. Determine the correct selector setting for the wire size from the data plate on the positioner (turret head assembly) and set the selector knob on the crimp tool to match. 4.1 If contacts are not inserted all the way prior to removing insertion tool, do not try to reinsert the insertion tool. Instead, remove the contact and try again; otherwise reinserting the insertion tool may damage the inside of the contact cavity. 4. Place the contact, mating end first, into the tool. 5. Remove tool and check the face of the connector for proper contact installation. Proper installation may also be checked by pulling back lightly on the wire to make sure the contact is properly seated. 5. Insert the stripped wire into the hollow end of the contact. Be sure the wire is inserted as far as it will go. 6. Close the tool completely to crimp. Unless the tool is closed completely, the tool will not release the contact. Completion After all the cavities have been filled, slide the hardware back into position on the connector and tighten. 7. Remove the crimped contact from the tool. Check the inspection hole to verify that the wire is fully inserted. Insertion of Contacts 1. Before inserting the contacts, unscrew the accessories (clamps, backshells or adapters) from rear of plug or receptacle. Slide the hardware over the wire bundle in the proper order for reassembly after all the contacts are inserted. Extraction of Contacts (Rework) 1. Slide the hardware back over the wire bundle. 2. Select the appropriate tool. Place the wire into the extraction tool of the pin or socket. 3. Slowly slide the extraction tool down wire into the contact cavities until the tool tip bottoms against the contact shoulder, expanding the clip retaining tines. Hold the wire firmly in the tool and pull the wired contact and tool straight out of the rear of the insulator. 2. To assist insertion of contacts, lubricate insulator (grommet) cavities with isopropyl alcohol. Alcohol will evaporate and will not leave a conductive film. Caution: Never use any lubricant other than isopropyl alcohol. Size Pin Contact Socket Contact Basic Crimp Tool Pin Positioner Socket Positioner Insertion/Removal Tool 22D M39029/58-360 M39029/57-354 M22520/2-01 M22520/2-09 M22520/2-06 M81969/14-01 22M M39029/58-361 M39029/57-355 M22520/2-01 M22520/2-09 M22520/2-06 M81969/14-01 22 M39029/58-362 M39029/57-356 M22520/2-01 M22520/2-09 M22520/2-06 M81969/14-01 20 M39029/58-363 M39029/57-357 M22520/1-01 M22520/1-04 Red M22520/1-04 Red M22520/2-01 M22520/2-10 M22520/2-10 16 M39029/58-364 M39029/57-358 M22520/1-01 M22520/1-04 Blue M22520/1-04 Blue M81969/14-03 12 M39029/58-365 M39029/57-359 M22520/1-01 M22520/1-04 Yellow M22520/1-04 Yellow M81969/14-04 M81969/14-10 For coax contacts refer to instructions supplied with contacts. www.conesys.com - 35 - sales@aero-electric.com MIL-DTL- 38999 S II Crimping Contacts 1. Select the appropriate crimp tool and ensure that the proper crimp head positioner is used.