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美制公制螺丝扭力规范Torque Bolt Specification


Hex Head Cap Screw(六角头螺丝)
Metric, Steel SAE Thread Bolt Size (公制螺丝 规格) Steel bolt M6 M8 M10 M12 M14 M16 M20 M22 M24 M30 M40 1/4"-20 5/16"-18 3/8"-16 1/2"-13 9/16"

;-12 5/8"-11 3/4"-10 7/8"-9 1"-8 1 1/4"-7 1 1/2"-6 Torque Aluminum (铝) Aluminum (铝) in.lbs cm.kg 45 51.85 80 92.17 144 165.91 312 359.46 408 470.07 720 829.53 960 1106.04 Aluminum (铝) Steel (铁) in. lbs. 72 144 252 624 888 1236 1512

Spec in. lbs. cm.kg 78 89.87 134 154.38 222 255.77 476 548.41 640 737.36 1116 1285.77 1800 2073.82 2424 2792.75 3600 4147.65 7920 9124.82 12660 14585.89

cm.kg 82.953 165.91 290.34 718.93 1023.1 1424 1742

Notes: Metric course thread pitch is slightly smaller(fine) compared to course U.S. thread. Torque value is for non heat treated steel bolts.

Machine Screws(机械螺丝)
Approx. Size(规 格) #1 #2 #3 #4 #5 #6 #8 #10 Screw Dia. (直径) 0.073" 0.086" 0.099" 0.112" 0.125" 0.138" 0.164" 0.190" Torque Values(扭力值) StainlessSteel(不 锈钢) in. lbs. cm.kg 1.5 1.71 2.5 2.85 4 4.55 5.2 5.92 8 9.11 9.6 10.93 20 22.77 23 26.19

Steel(铁) in. lbs. cm.kg 1.75 1.99 2.6 2.96 4 4.55 5.5 6.26 8 9.11 10 11.39 21 23.91 24 27.32

Bronze(铜) in. lbs. cm.kg 1.44 1.66 2.3 2.65 3.6 4.15 4.8 5.53 7.1 8.18 9 10.37 18 20.74 21 24.19

Aluminum(铝) in. lbs. cm.kg 0.09375 0.11 1.4 1.61 2.1 2.42 2.9 3.34 4.2 4.84 5.3 6.11 11 12.67 14 16.13

Note:Simple formula to find machine screw diameter = (screw number X .013) + .060, used to Identify the screw

Note:Add 5% to the above torque value for Fine Thread hardware.


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