MIL-PRF-52347D
3.3.2 Kit components construction.
3.3.2.1 Wire rope. The wire rope shall be a 0.375 inch diameter, general purpose type. It
shall have a nominal strength of 4080 pounds (lbs) and an acceptance breaking strength of 3980
lbs (see 4.5.3).
3.3.2.2 Manila rope. The manila rope shall be mildew-resistant treated 0.50 inch (in.)
diameter, standard 3 strand type. It shall have a minimum breaking strength of 2650 lbs. As an
alternate, an equivalent non-metallic material may be used (see 4.5.4).
3.3.2.3 Wire rope clamps. Wire rope clamps shall be the single grip, single saddle type,
0.375 in. size, with U-bolts and nuts. Configuration details of clamp components may be the
contractor's design; however, the assembled clamp shall be representative of the illustration in
figure 1. The inside width between the parallel U-bolt legs shall be sufficient to permit properly
griping a rope double over. The clamps shall withstand, without distortion, 18.5 ft-lbs torque
(see 4.5.5).
FIGURE 1. Wire rope clamp.
3.3.2.4 Shackles. Shackles shall be the screw pin anchor type, 0.375 in. size, similar to
figure 2. The shackles shall have a safe working strength of 1590 lbs, a proof strength of
3180 lbs, and a minimum breaking strength of 7950 lbs (see 4.5.6).
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