Nm(牛m)=0.73756Ft-tb(英尺磅)
强 度 等 级螺栓规格NmM4M5M6(M7)M8M10M12(M14)M16(M18)M20(M22)M24(M27)1.01.82.84.97.814.724.539.261.084.0121.0164.0208.0314.04.6Ft-tb0.71.32.13.65.810.818.128.945.062.089.2121.0153.4231.65.6 (A4-50)Nm1.32.53.96.99.819.633.454.082.0114.0163.0221.0282.0422.0Ft-tb1.01.82.95.17.214.524.639.860.584.1120.2163.0208.0311.36.9 (A4-70)Nm2.44.77.812.819.639.258.0108.0167.0231.0324.0432.0559.0824.0Ft-tb1.83.55.89.414.528.942.879.7123.2170.4239.0318.6412.3607.78.8 (A4-80)Nm2.85.69.815.724.544.178.5128.0196.0260.0373.0500.0638.0961.0Ft-tb2.14.17.211.618.132.557.994.4144.6191.8275.1368.8470.6708.8Nm3.97.813.722.634.363.8113.0181.0267.0366.0525.0711.0903.01354.010.9Ft-tb2.95.810.116.725.347.183.3133.5196.9269.9387.2524.4666.0998.7Nm4.99.315.726.539.278.5137.0216.0320.0439.0628.0853.01079.01638.012.9Ft-tb3.66.911.619.528.957.9101.0159.3236.0323.8463.2629.1795.81208.1M30(M33)422.0579.0311.3427.0569.0785.0419.7579.01109.01511.0818.01114.51315.01795.0969.91323.91844.02531.01360.11866.82217.03021.01635.22228.2
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