Jam Nuts are low profile, short hex nuts, with thickness half of the standard hex nuts. Jam nut is coupled with standard hex nut as a back up nut or lock nut where it is jammed up against the standard hex nut to lock the two in place. Jam nuts are also known as thin hex nuts, hex jam nuts, jam lock nuts or thin hex lock nuts. Jam nut dimensions are defined in both metric and imperials sizes with unified national coarse pitch (UNC), fine pitch (UNF), fixed pitch (UN) and iso metric thread profile. These are produced across all material categories and astm specifications.Browse the page for information on jam nut manufacturing process, forming method, available sizes, sub-types, thread types, metric and imperial dimension standards, weight charts, torque values, material categories, grades and astm specifications.
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