GENERAL
BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RCK54D, WSM
G-15
[4] METRIC SCREWS, BOLTS AND NUTS
WSM000001GEG0003US0
[5] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH
UNC OR UNF THREADS
WSM000001GEG0008US0
[6] PLUGS
WSM000001GEG0005US0
Grade
Property class 8.8 Property class 10.9
Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft
M8 24 to 27 2.4 to 2.8 18 to 20 30 to 34 3.0 to 3.5 22 to 25
M10 48 to 55 4.9 to 5.7 36 to 41 61 to 70 6.2 to 7.2 45 to 52
M12 78 to 90 7.9 to 9.2 58 to 66 103 to 117 10.5 to 12.0 76.0 to 86.7
M14 124 to 147 12.6 to 15.0 91.2 to 108 167 to 196 17.0 to 20.0 123 to 144
M16 197 to 225 20.0 to 23.0 145 to 166 260 to 304 26.5 to 31.0 192 to 224
Grade
SAE GR.5 SAE GR.8
Unit N·m kgf·m lbf·ft N·m kgf·m lbf·ft
1/4 11.7 to 15.7 1.20 to 1.60 8.63 to 11.5 16.3 to 19.7 1.67 to 2.00 12.0 to 14.6
5/16 23.1 to 27.7 2.36 to 2.82 17.0 to 20.5 33 to 39 3.4 to 3.9 25 to 28
3/8 48 to 56 4.9 to 5.7 36 to 41 61 to 73 6.3 to 7.4 45 to 53
1/2 110 to 130 11.3 to 13.2 81.2 to 95.8 150 to 178 15.3 to 18.1 111 to 131
9/16 150 to 178 15.3 to 18.1 111 to 131 217 to 260 22.2 to 26.5 160 to 191
5/8 204 to 244 20.8 to 24.8 151 to 179 299 to 357 30.5 to 36.4 221 to 263
Shape Size
Material of opponent part
Ordinariness Aluminum
N·m kgf·m lbf·ft N·m kgf·m lbf·ft
Tapered screw
R1/8 13 to 21 1.3 to 2.2 9.4 to 15 13 to 19 1.3 to 2.0 9.4 to 14
R1/4 25 to 44 2.5 to 4.5 18 to 32 25 to 34 2.5 to 3.5 18 to 25
R3/8 49 to 88 5.0 to 9.0 37 to 65 49 to 58 5.0 to 6.0 37 to 43
R1/2 58.9 to 107 6.00 to 11.0 43.4 to 79.5 59 to 78 6.0 to 8.0 44 to 57
Straight screw G1/4 25 to 34 2.5 to 3.5 18 to 25 – – –
G3/8 62 to 82 6.3 to 8.4 46 to 60 – – –
G1/2 49 to 88 5.0 to 9.0 37 to 65 – – –
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