MIL-DTL-781J
3.2 Qualification. Steel wire rope terminals furnished under this specification shall be
products that are authorized by the qualifying activity for listing on the applicable qualified
NAS494 and NAS1435 terminals.
3.3 Material. Unless otherwise specified, all terminals, except NAS1435, shall be made
of corrosion resistant steel, 303Se (UNS S30323) or 304 (UNS S30400). NAS1435 terminals
shall be made of 301(UNS S30100), 302 (UNS S30200), 304 (UNS S30400) or 304L (UNS
S30403). All terminals shall be suitable for swaging onto wire ropes in accordance with the
requirements of 3.3.1.
3.3.1 Tensile strength. Except for NAS494 and NAS1435 terminals, the maximum
tensile strength shall not exceed 125,000 pounds per square inch for sizes under 1/4 inch in
thickness and 115,000 pounds per square inch for sizes 1/4 inch and larger in thickness. Where
applicable, tensile strengths for parts that will be subjected to finish annealing may be higher than
those specified, but must meet the hardness requirements delineated in 3.8.3, after annealing.
3.4 Threads. Threads shall be in accordance with ASME B1.1.
3.5 Design and dimensions.
3.5.1 Type I shank terminals. The design and dimensions of type I terminals shall be in
accordance with MS20658, MS20667, MS20668, MS21259, or MS21260, as specified in the
contract or order (see 6.2).
3.5.2 Type II ball-end terminals. The design and dimensions of type II terminals shall
be in accordance with MS20663, MS20664, or NAS494, as specified in the contract or order
(see 6.2).
3.5.3 Strap, cable eye end and fork end terminals. The design and dimensions of strap,
cable eye end and fork end terminals shall be in accordance with NAS1435, as specified in the
contract or order (see 6.2).
3.6 Protective treatment.
3.6.1 Surface treatment methods. After removal of all oil and grease, terminals shall be
treated by one of the following methods:
a. Nitric passivation per ASTM A967/A967M, Nitric 3 method or SAE AMS2700, Method 1,
type 7.
b. Nitric passivation per ASTM A967/A967M, Nitric 1 method or SAE AMS2700, Method 1,
type 2
c. Citric passivation per ASTM A967/A967M, Citric 1, 2 or 3 method or SAE AMS2700,
Method 2.
d. Glass bead peening per SAE AMS2430.
The method of treatment is at the manufacturer's option unless specified in the contract (See 6.2.e).
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