LWSS 031

Washers Regular Split Lockwasher METRIC A B T W METRIC - SPLIT LOCKWASHERS Nominal Washer Size DIN 127B A B T W Inside Diameter Outside Diameter Section Thickness Section Width Max Min Ref Ref Ref M2 2.4 2.1 4.4 0.50 0.9 M2.5 2.9 2.6 5.1 0.60 1 M3 3.4 3.1 6.2 0.80 1.3 M4 4.4 4.1 7.6 0.90 1.5 M5 5.4 5.1 9.2 1.20 1.8 M6 6.5 6.1 11.8 1.60 2.5 M8 8.5 8.1 14.8 2 3 M10 10.7 10.2 18.1 2.2 3.5 M12 12.7 12.2 21.1 2.5 4 M16 17.0 16.2 27.4 3.5 5 M20 21.2 20.2 33.6 4 6 M24 25.5 24.5 40 5 7 M30 31.7 30.5 48.2 6 8 M36 37.7 36.5 58.2 6 10 M42 43.7 42.5 68.2 7 12 M48 50.5 49 75 7 12 Description A coiled, hardened, split circular washer with a slightly trapezoidal wire section, for use with metric screws. Applications/ Advantages (A) Applies greater bolt tension per unit of applied torque; (B) Provides a hardened bearing surface, creating more uniform torque control; (C) Provides more uniform load distribution; (D) Resists loosening caused by vibration and corrosion; (E) Is preferred lockwasher for use with hardened bearing surfaces. Material Spring steel Hardness Rockwell C 44 - 51 Plating See Appendix-A for information about the plating of carbon steel and alloy steel lock washers. This page prints with a watermark