257-255Z125-35E

257-255 Jam Nut Mount Hermetic Receptacle with Crimp Removable Socket Contacts, MIL-DTL-38999 Series I Type MIL-DTL 38999 Type Basic Number Shell Size Table I Alternate Key Position A, B, C, D, E (N = Normal) B 257-255 Z1 9 - 35 N Insert Arrangement Per MIL-STD-1560 Material and Finish Z1 - CRES, Passivated Pin contact interferance Master key B dia .920 .910 1.695 max ORing 5 90° 185° C D flat 120° typ H thread A thread C Jam nut E .125 max panel .219 min APPLICATION NOTES 1. 2. 3. 4. Assembly identified with manufacturer’s name and part number, space permitting. Insert arrangements in accordance with MIL-STD-1560. Glenair 257-255 receptacle connector is designed to mate with any QPL manufacturer’s MIL-DTL-38999 Series I plug connector having the same insert arrangement & polarization. Material/finish: Shell, jam nut—CRES/passivated 5. 6. Pin contacts—nickel-iron alloy 52/gold Socket contacts—copper alloy/gold Insulator—fused vitreous glass/N.A. Insulators—high grade rigid dielectric/ N.A. Seals—pure fluorosilicone rubber/ N.A. Supplied crimp removal socket contacts conform to M39029/57 Metric Dimensions (mm) are indicated in parentheses. © 2009 Glenair, Inc. www.glenair.com CAGE CODE 06324 Printed in U.S.A. E-Mail: sales@glenair.com GLENAIR, INC. • 1211 AIR WAY • GLENDALE, CA 91201-2497 • 818-247-6000 • FAX 818-500-9912 B-18 with Crimp Removable Socket Contacts, MIL-DTL-38999 Series I Type F dia HERMETIC LEAK RATE MOD CODES Designator –585A –585B –585C Required Leak Rate 1 x 10-10 cc’s Helium per second 1 x 10-9 cc’s Helium per second 1 x 10 cc’s Helium per second -8 G Recommended Panel Cut-Out TABLE I: CONNECTOR DIMENSIONS SHELL SIZE 9 11 13 15 17 19 21 23 25 A THREAD CLASS 2A .6875-24 UNEF .8125-20 UNEF 1.000-20 UNEF 1.125-18 UNEF 1.250-18 UNEF 1.375-18 UNEF 1.500-18 UNEF 1.625-18 UNEF 1.750-18 UNS B DIA ±.016(0.4) 1.188(30.2) 1.375(34.9) 1.500(38.1) 1.625(41.3) 1.750(44.5) 1.938(49.2) 2.062(52.4) 2.188(55.6) 2.312(58.7) C FLATS ±.016(0.4) 1.062(27.0) 1.250(31.8) 1.375(34.9) 1.500(38.1) 1.625(41.3) 1.812(46.0) 1.938(49.2) 2.062(52.4) 2.188(55.6) D FLAT ±.005(0.1) .650(16.5) .750(19.1) .937(23.8) 1.061(26.9) 1.186(30.1) 1.311(33.3) 1.436(36.5) 1.561(39.6) 1.686(42.8) TABLE I (CONTINUED): CONNECTOR DIMENSIONS SHELL SIZE 9 11 13 15 17 19 21 23 25 E DIA ±.016(0.4) .109(2.8) .109(2.8) .109(2.8) .109(2.8) .140(3.6) .140(3.6) .140(3.6) .140(3.6) .140(3.6) F DIA ±.005(0.1) .705(17.9) .827(21.0) 1.012(25.7) 1.139(28.9) 1.264(32.1) 1.389(35.3) 1.512(38.4) 1.639(41.6) 1.764(44.8) G ±.005(0.1) .665(16.9) .764(19.4) .950(24.1) 1.079(27.4) 1.203(30.6) 1.328(33.7) 1.454(36.9) 1.579(40.1) 1.704(43.3) H THREAD CLASS 2A .4375-28 UNEF .5625-24 UNEF .6875-24 UNEF .8125-20 UNEF .9375-20 UNEF 1.0625-18 UNEF 1.1875-18 UNEF 1.3125-18 UNEF 1.4375-18 UNEF © 2009 Glenair, Inc. www.glenair.com CAGE CODE 06324 Printed in U.S.A. E-Mail: sales@glenair.com GLENAIR, INC. • 1211 AIR WAY • GLENDALE, CA 91201-2497 • 818-247-6000 • FAX 818-500-9912 B-19 MIL-DTL 38999 Type 257-255 Jam Nut Mount Hermetic Receptacle B