国 上泽充通大学 Nut Standardization 口 Dimensions of Hexagonal Nuts Height H Nominal Width Regular Thick or Size,in w Hexagonal Slotted JAM M5 8 4.7 51 2.7 M6 10 5.2 5.7 3.2 M8 13 6.8 7.5 4.0 M10 16 8.4 9.3 5.0 M12 10.8 12.0 6.0 M14 21 12.8 14.1 7.0 M16 14.8 16.4 8.0 M20 响 18.0 20.3 10.0 M24 21.5 23.9 12.0 M30 46 25.6 28.6 15.0 M36 5 31.0 34.7 18.0 Table E-31 圆上泽文廷大学 Washers(垫图) Increases area of contact between bolt head or nut and clamped part Washers protect bolt head so that it do not aggravate stress concentrations A washer also prevents marring of part surface by nut when it is tightened. 6 88  Dimensions of Hexagonal Nuts Nut Standardization Table E-31 Increases area of contact between bolt head or nut and clamped part Washers protect bolt head so that it do not aggravate stress concentrations A washer also prevents marring of part surface by nut when it is tightened. Washers(垫圈)