MIL-DTL-38999/28G
REQUIREMENTS:
Dimensions and configurations: See figure 1.
Material: See table I.
Finish: See table I and MIL-DTL-38999.
TABLE I. Material and finish. 1/ 2/
Applicable
PIN code
Material
Finish
class of
finish number
connectors
C
Aluminum alloy
Anodic (nonconductive)
C
F
Aluminum alloy
Electroless nickel coating (conductive)
F, G, R
Olive-drab cadmium plate over a suitable
W
W
Aluminum alloy
underplate (conductive)
Same as W, but higher corrosion
X
X
Aluminum alloy
requirement
Pure electrodeposited aluminum,
P
P
Aluminum alloy
non-reflective (conductive)
Nickel fluorocarbon polymer,
T
Aluminum alloy
T
non-reflective (conductive)
Z
Aluminum alloy
Zinc nickel, non-reflective (conductive)
Z
K
Corrosion resistant steel
Passivated (conductive)
K, H, Y
N
Corrosion resistant steel
Electrodeposited nickel plating (conductive)
N, S, L
Olive-drab cadmium plate over a suitable
J
J
Resin with or without filler
underplate (conductive)
M
Resin with or without filler
Electroless nickel coating, (conductive)
M
V
Resin with or without filler
Unplated (no finish)
J, M
1/ See MIL-DTL-38999.
2/ Shall be cleaned, descaled and passivated in accordance with SAE-AMS2700.
Mating connectors: MIL-DTL-38999, series III and IV.
Safety wire hole pull out: Safety wire holes shall not pull out when safety wire NI-CU alloy (MONEL)
(UNS NO4400) or NI-CR alloy (INCONEL) (UNS NO6600) 0.51 mm diameter in accordance with
NASM20995 is threaded through a hole and a pull of 133.5 Newton minimum is applied. Three pulls shall
be made, one parallel with axis of nut in each direction and one perpendicular to axis of nut.
Qualifications. Qualifications shall be in accordance with MIL-DTL-38999 except only the following tests
shall be required:
Examination of product.
Safety wire hole pull out (see requirements).
Salt spray (corrosion).
3
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