MIL-DTL-3903F
3. REQUIREMENTS
3.1 First article. When specified (see 6.2), a sample shall be subjected to first article
3.2 Description. Wire rope assemblies (hereinafter called "slings") shall be as shown in
figure 1 and specified herein.
3.2.1 Characteristics. Each sling shall be fabricated from one continuous piece of new
and unused wire rope with a loop at each end, secured with either a hand or swage splice, as
shown in figure 1.
3.3 Material. Materials shall be as specified herein. Materials not definitely specified
shall be selected by the contractor and shall be new and unused and subject to all provisions of
this document.
3.3.1 Material deterioration and control. The slings shall be fabricated from compatible
materials, inherently corrosion and deterioration resistant or treated to provide protection against
the various forms of corrosion and deterioration that may be encountered in any of the applicable
storage and operating environment to which the item may be exposed.
3.3.1.1 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with
each other unless protector against galvanic corrosion. Dissimilar metals and methods of
protection are defined and detailed in MIL-STD-889.
3.3.1.2 Identification of materials and finishes. The contractor shall identify the specific
material, material finish or treatment for use with components and sub-components, and shall
make information available, upon request, to the contracting officer or designated representative.
3.3.2 Wire rope. Wire rope shall be of improved plow steel and conform to RR-W-410,
type I, class 2 or class 3 as applicable, for preformed, regular lay, and shall be the size and finish
specified in table I.
TABLE I. Wire rope sizes and finish for types I and II slings.
Item
Wire rope diameter
Finish
Types I and II
Class 1
3/8 through 1-1/8 inches Uncoated or galvanized
as specified (see 3.7)
Class 2
1-1/4 through 2 inches
Uncoated or galvanized
as specified (see 3.7)
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