#6 0.7 1 1.5 1.9 2 2.6
#8 1.4 1.8 2.7 3.5 3.8 5
#10 2 2.6 3.8 5 5.3 7.1
1/4 4.8 6.4 8.8 12 13 18
5/16 9.6 13 18 24 25 34
3/8 18 24 31 42 (44) 60
7/16 28 38 51 69 72 96
1/2 (43) 57 80 104 110 140
5/8 90; 110 160 210 220 300
3/4 150 200 280 370 390 530
7/8 250 330 450 610 640 850
1 370 500 670 900 960 1280
1 1/8 390 510 840 1100 1360 1760
1 1/4 540 720 1200 1600 1920 2560
1 1/2 960 1300 2100 2700 3280 4320
5 - Tightening torque values: zinc dichromate-plated or white zinc-plated threads in inches
Nominal
dimension
Tensile grade Tensile grade Tensile grade
SAE 1 (ISO 10.9-BS B) SAE 5 (ISO 8.8-BS S) SAE 8 (ISO 10.9-BS V)
Torque lbf ft Torque lbf ft Torque lbf ft
Min. Max. Min. Max. Min. Max.
#6 0.6 1 1.3 1.8 1.8 2.4
#8 1.3 1.7 2.5 3.2 3.4 4.6
#10 1.8 2.4 3.4 4.6 4.9 6.6
1/4 4.4 5.9 8 11 12 16
5/16 9 12 16 22 23 31
3/8 16 22 29 (39) (41) 55
7/16 26 35 (47) 63 66 88
1/2 (40) 53 74. 96 100 130
5/8 81 103 150 190 210 270
3/4 140 180 260 340 360 490
7/8 230 300 410 560 590 780
1 340 460 620 830 880 1180
4
1. Introduction
1-19
ACX2831410