Figure 5-1. Tiedown of HMMWV on semitrailer.

25 August 1988

TM 55-2320-280-14

Table 5-1. Bill of Materials for Tiedown of HMMWV on Semitrailer

Item

Description

Approximate

quantity

Wire rope ...............................

6 x 19, IWRC; improved plow steel; preformed, regular-lay; ta-

48 feet.

ble X, Fed Spec RR-W-410C: 3/8-inch.

Clamps...................................

Wire rope, U-bolt clamps, saddled, single-grip, steel, Crosby

heavy-duty, or equal; Fed Spec FF-C-4500: 3/8-inch

Thimbles ................................

Standard, open-type, 3/8-inch....................................................

Chain* ....................................

General service, S-leg, high-tensile, 1/2-inch-wide, 10-foot-long,

with two grabhooks; 16,000-pound safe-working rating.

Load binders* .........................

Type I, plain, 18-1/2-inch, operating lever, with two grabhooks

designed for 1/4- to 1/2-inch chain; 16,000-pound safe-

working rating; Fed Spec GGG-B-325A; NS 3990-00-171-

9774.

*Chain and load binders may be substituted for wire rope, clamps, and thimbles.

Table 5-2. Application of Materials for Tiedown of HMMWV on Semitrailer (Fig. 5-1)

No.

Item

Required

Application

A ........

4 Tiedowns (detail 3). Each consists of one piece of 3/8-inch, 6 x 10, IWRC wire

rope, length as required (about 12 feet). Form a complete loop between tie-

down provision and appropriate semitrailer stake pocket. The angle between

the tiedowns and the semitrailer deck should be as close to 45 degrees as

possible. The wire rope ends should overlap at least 24 inches.

5-2