An Integrated Publishing, Inc. Site

An Integrated Publishing Website

MIL-DTL-83538 Connectors And Accessories, Electrical, Circular, Umbilical, Environment Resistant, Removable Crimp Contacts For Mil-Std-1760 Applications \(Metric\), General Specification ForThis specification covers connectors and accessories, electrical, circular, umbilical. The connector assembly provides the necessary connections required to meet MIL-STD-1760, class I electrical interface between stores and their associated launchers using a "blind mating" mechanism. The connector assembly consists of a receptacle installed on the launcher, a receptacle installed on the store, and a buffer plug installed between the two receptacles. This specification also includes the required mounting adapters and nut, accessory adapter, cable bushing, and protective covers \(see 6.1 for details on intended use and application\). The connectors covered by this specification are intended for use with launcher mechanisms with an applied holding force in the range 271 Newtons \(61 lbs\) to 427 Newton \(96 lbs\).

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18

MIL-DTL-83538D

Subject to qualification activity approval, sources that qualify MIL-DTL-83538/4 styles A and C, may

obtain qualification by similarity for styles B & D respectively. Also, Subject to qualification activity

approval, sources that qualify MIL-DTL-83538/1 type 2, may obtain qualification by similarity on type 1.

Manufacturers seeking qualification by similarity shall also be required to submit a signed and dated

statement (signed by a company senior executive on company letterhead) certifying that all materials

utilized in the fabrication and assembly of the insert, the manufacturing procedures, and the design of the

insert retention system are identical to the QPL approved 25-20 insert arrangement in accordance with

MIL-DTL-38999. Furthermore, this statement shall also include a reference to the specific QPL listing

and test report number.

4.4.1 Preparation of samples. Except as otherwise specified for shielded contacts, wiring of crimp-type

contacts shall be accomplished using tools in accordance with MIL-DTL-22520, class I. The length of

stripped portion of conductor shall be at least long enough to reach the bottom of the crimp barrel, but

shall not be so long that more than 0.79 mm (.031 inch) of conductor is exposed at end of the barrel when

conductor end touches bottom of barrel. Samples provided as specified in 4.4.2 shall be wired with wire

having a smooth extruded jacket of waterproof construction. Two samples shall have wires as listed for

maximum diameter and the other two samples shall have wires as listed for minimum diameter in table

IV. Two power contact cavities of each sample provided shall contain unwired contacts and contain

sealing plugs in accordance with MS27488. In the case of the size 8 and size 12 contact sizes, in order to

satisfy certain aircraft requirements, the connectors shall be wired with a mixture of wires from Military

Specifications and JN and/or PAN specifications (see table V). The location of each wire source shall be

recorded for each location and reported in the final test report.

TABLE IV. Test wire sizes.

Contact size

Maximum diameter

Minimum diameter

M22759/18, /19, /32, /33

-22

M22759/7-20

M22759/44, /45, /46

-22

M22759/11, /12, /13, /14

-24

M22759/8-20

M22759/22, /23

M22759/3, /4, /7, or /8

M22759/18, /19, /32,

-16

M22759/44, /45

-16

M17/94-RG179

M17/113-R316

coaxial/shielded

M17/113-RG316

JN1088

8 twinaxial

M17/176-00002

PAN6421

TABLE V. Contact locations and cable types.

Contact

Locations

Cable type

M39029/91

A, K,

M17/176-00002

M39029/103

W, 5

M17/113 � RG316

JN1057S

PAN6421

JN1104S50C

3, 2

JN1088WT