MIL-DTL-87161F
Minimum weight of
Wire diameter
zinc coating (oz./sq. ft.)
0.005 to 0.010 inch
0.03
Over 0.010 to 0.015 inch
0.05
Over 0.015 to 0.028 inch
0.10
Over 0.028 to 0.060 inch
0.20
Over 0.060 to 0.090 inch
0.30
3.2.4 Lubricant. The wire strand shall be coated with a friction-preventive, non-
corrosive lubricant. The lubricant shall be applied so that each wire is coated. As a minimum,
the lubricant shall operate at temperatures from -65 °F to +250 °F (-54 °C to +121 °C). Any
change in lubricant is considered a major process change and may require requalification testing
(see 3.1).
3.3 Construction.
cylindrical, smooth, and of uniformly high quality.
3.3.1.1 Wire properties. Tensile strengths of wire and wire sizes shall be such that it will
meet the requirements of this specification.
3.3.1.2 Preforming of wires. The individual wires composing each type of steel wire
strand shall be shaped into the exact helical position they will have in the finished strand, so that
if the strand is cut or severed, the measured diameter (see 6.4.2) of the strand at the unseized cut
ends shall not increase by more than the amount specified in table I.
3.3.1.3 Splicing and joining. All wire splices shall be brazed or welded. In a type I,
1 x 7 wire strand, there shall be no more than 1 wire splice or joint in any 150-ft. section of a
completed strand. In a type II, 1 x 19, wire strand, joints and splices in individual wires shall be
well spaced and not less than 20 feet apart.
3.3.2 Strand lengths. The steel wire strand shall be furnished on reels in lengths
specified by the procuring activity. There shall be no more than two pieces of wire strand on the
reel. The shortest piece shall be not less than 20 percent of the reel length. The reel length shall
be marked on the reel and package. In addition, when two pieces are supplied, both lengths shall
be marked on the reel and package.
3.3.3 Wire rope construction. Steel wire strand shall be either type I, 1 x 7 class,
construction 1 or 2, or type II, 1 x 19 class, construction 1 or 2. The type of strand for the
respective diameters, the dimensional tolerances, and the physical properties shall be as specified
in table I.
3.3.3.1 Type I, 1 x 7 class, construction 1. Strand of this type, class, and construction
shall consist of a layer of 6 wires laid around a center wire in a right-hand direction. The length
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