The Performance Of The Lock Nut

Terms of this standard uses terminology consistent with the provisions of GB/t 6930.
This standard specifies a prevailing torque type steel Hexagon nuts machines and marking system of work performance, specifications, test methods and marking. This standard applies to carbon steel or alloy steel, widths conform to GB 3104 under proof load, nominal height ≥ 0.8D, necessary to provide effective moment, thread diameter of coarse 6H nuts 3~39mm. In addition to effective moments segment, its thread dimensions and tolerances according to GB 193, GB and GB 196 197 requirements. Nut operating temperature range should meet without plating processing of full metal nut: ~+300 ℃-50 ℃. electroplating metal nut::-50 ¡æ ~+230 ¡æ embedded non-metallic components of nuts:-50 ¡æ ~+120 ¡æ this standard does not apply to nuts with special performance requirements (such as weldability and corrosion resistance). For stainless steel, non-ferrous metals with carbon steel or alloy steel fine thread lock nut or thin nut, by mutual agreement, this standard specifies the effective torque performance and test methods.