TM 9-2350-256-20-2
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3.
Tightening Metal Fasteners
When torquing a metal fastener, select a torque wrench whose range fits the required torque value. A torque wrench is most
accurate from 25% to 75% of its stated range. A torque wrench with a stated range of 0100 lb-ft (0136 Nm) will be most
accurate from 2575 lb-ft (34102 Nm). The accuracy of readings will decrease as you approach 0 lb-ft or 100 lb-ft (0
Nm or 136 Nm). The ranges in Table 3 are based on this principle.
Table 3. Torque Ranges
Stated Range
Most Effective Range
0200 pound-inches (lb-in.) (023 Nm)
50150 lb-in. (617 Nm)
1575 lb-ft (20102 Nm)
3060 lb-ft (4181 Nm)
0175 lb-ft (0237 Nm)
44131 lb-ft (60178 Nm)
0600 lb-ft (0813 Nm)
150450 lb-ft (203610 Nm)
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