Figure 5-6. End elevation, tiedown of the M973 on the M172A1 semitrailer.

TM 55-2350-272-14

Figure 5-6. End elevation, tiedown of the M973 on the M172A1 semitrailer.

Table 5-3. Bill of Materials for Blocking and Tiedown of the M973 on the M172A1 Semitrailer (Figs 5-5, 5-6, and 5-7).

Approximate

Item

Description

Quantity

Lumber

Douglas-fir or comparable, straight-grain, free from material defects;

Fed Spec MM-L-71:

2- x 4-inch

2 linear ft

2- x 6-inch

100 linear ft

2- x 10-inch

40 linear ft

Common, steel; fiathead, bright or cement-coated, type II, style 10;

Fed Spec FF-N-106: 12d

270

20d

100

Wire rope*

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

Fed Spec RR-W410: inch

160 ft

Clamps*

Wire rope, U-bolt clips, saddled, single-grip, forged steel, Crosby heavy-duty

or equal; Fed Spec FF-C450: -inch

*Chains and loadbinders may be substituted.

5-7