Nut: hex

ISO 7040

ISO 7040 - Prevailing torque hexagon regular nuts (with non-metallic insert), product grades A and B

Automatically build standard products in SOLIDWORKS with TSFP.

Prevailing torque hexagon regular nuts with a non-metallic insert, widely known as nylon insert lock nuts: the regular-height, coarse pitch member of the family, where ISO 10511 is thin, ISO 7041 high and ISO 10512 fine pitch, and the replacement for DIN 982, which has the DIN 934 widths across flats on M10, M12, M14 and M22. Product grade A for threads up to and including M16 and product grade B above. The metal body is the regular ISO 4032 nut: for a given diameter the hexagon body is identical, and a polyamide ring held in the top of the nut grips the bolt thread and resists loosening. The overall height is therefore greater than that of a plain nut of the same size. The insert limits the service temperature. Covers metric coarse pitch from M3 to M39; M3 and M4 are specified in a normative annex, and M7, M14, M18, M22, M27, M33 and M39 are non-preferred threads.