MIL-DTL-83420M
managing Military Department's or Defense Agency's automated packaging files, CD-ROM
products, or by contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful,
but is not mandatory.)
6.1 Intended use. The wire rope covered by this specification is intended for use in
aircraft flight control systems applications where high resistance is needed against corrosion,
abrasion, and fatigue wear.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of the specification.
Type and composition of wire rope (see 1.2).
b.
c.
Size and construction of wire rope (see specification sheet).
d.
For type II, also specify jacket outside diameter.
e.
For composition A, specify type of protective coating (see 3.3.3).
f.
Length of wire rope per reel to be furnished.
Packaging requirements (see 5.1).
g.
6.3 Qualification. With respect to products requiring qualification, awards will be made
only for products that are, at the time of award of contract, qualified for inclusion in QPL-83420
whether or not such products have actually been so listed by that date. The attention of
contractors is called to these requirements, and manufacturers are urged to arrange to have the
products that they propose to offer to the Federal Government tested for qualification in order
that they may be eligible to be awarded contracts or orders for the products covered by this
specification. Information pertaining to qualification of products may be obtained from Defense
Supply Center Richmond, ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA
23297-5616.
6.4 Definitions.
6.4.1 Center wire. The center of all strands is an individual wire and is designated as a
center wire.
6.4.2 Jacketing. Jacketing is the sheet or shielding coating around the wire rope and is
extruded over the wire rope to completely enclose the wire rope with a protective coating.
6.4.3 Lay (twist). The helical form taken by the wires in the strand and by the strand in
the wire rope is characterized as the lay (twist) of the strands or wire rope, respectively. In a
right-hand lay, the wires of strands are the same direction as the thread on a right-hand screw,
and for a left-hand lay, the strands or wires lay in an opposite direction.
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