Jam Nuts in USA

Unification. Bold type indicates products unified dimensionally with British and Canadian standards. Smaller Sizes. For sizes 14 in. through 1 in, the nuts specified in Table 3 are recommended. Tops of Nuts. Tops of nuts shall be flat and chamfered. Diameter of the chamfer circle shall be equal to the maximum more...

Jam nuts are used as a second nut threaded over a bolt to prevent the first from loosening, or in applications where there is not sufficient space for a standard nut. more...