Bit Make-Up Torque

Bit Size API Pin Size Recommended Torque
in. mm in. mm ft-lbs. N-m
3-1/2 to 4-1/2 89 to 114 2-3/8 Reg. 60 3,000 to 3,500 4,000 to 4,800
4-5/8 to 5 118 to 127 2-7/8 Reg. 73 4,500 to 5,500 6,000 to 7,000
5-1/8 to 7-3/8 137 to 187 3-1/2 Reg. 89 7,000 to 9,000 9,500 to 12,000
7-5/8 to 9 194 to 229 4-1/2 Reg. 114 12,000 to 16,000 16,000 to 22,000
9-1/2 to 28* 241 to 711 6-5/8 Reg. 168 28,000 to 32,000 38,000 to 43,000
14-3/4 to 28* 375 to 711 6-5/8 Reg.
or
7-5/8 Reg.
168
or
194
28,000 to 32,000

34,000 to 40,000
38,000 to 43,000

46,000 to 54,000
18-1/2 to 28* 470 to 711 7-5/8 Reg.
or
8-5/8 Reg.
194
or
219
34,000 to 40,000

40,000 to 60,000
46,000 to 54,000

54,000 to 81,000

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