MIL-DTL-21617B
4.5.8 Contact resistance (see 3.6.7). The contact resistance shall be tested in accordance with test
procedure EIA-364-06. The following details apply:
a. The electrical resistance of each pair of the 25 sets of mated pin and socket contacts shall be
determined by measuring the voltage drop across the assembled contacts when carrying the
specified current.
b. The voltage drop shall be measured at the extreme terminal end of the contacts as shown on
figure 2.
FIGURE 2. Measurement of potential.
4.5.9 Contact retention (see 3.6.8). Individual contacts in connectors shall withstand axial loads in
either direction as shown in table XII. Measurements shall be made on individual contacts with all other
contacts in place and the insert assembled in its shell. The loads shall be applied uniformly at
approximately 1 pound (0.45 kg) per second.
TABLE XII. Contact axial loads.
Contact
Axial load lbs
size
min
20
7 (3.18 kg)
16
10 (4.54 kg)
12
15 (6.80 kg)
8
20 (9.07 kg)
4
20 (9.07 kg)
4.5.10 Contact separation (see 3.6.9). The average force required to separate the test pin from socket
contact shall not exceed the maximum average values shown in table V, and none of the values shall be
less than the minimum individual force indicated in table V. The values shall be obtained from a sample
lot of 25 socket contacts. The separation force may be determined with socket contacts either in or out of
their insulators. Gradually increasing loads shall be applied until the test pin properly separates from the
socket. Depth of engagement shall conform to that encountered in service the following conditions shall
apply:
a. Provisions shall be made for mounting socket contacts in a suitable position for applying gradually
increasing loads during withdrawal of the minimum diameter hardened steel test pins.
b. The finish on the steel pins shall not exceed 10 microinches (0.25 µm), and the gauging end of the
pin shall be rounded or chamfered.
15
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business