Hex Jam Nuts have a lower profile than a standard hex nut but have the same dimension across the flats and corners. A hex jam nut can be threaded onto a bolt and run tight against a standard nut which will lock the nut in place and prevent it from backing off. Thus hex jam nuts may sometimes be used as locking nuts.
Jam Nuts Diameters
Jam Nuts are available on the FCH Network with Imperial/US diameters that range from #1 to 5 and with Metric diameters that range from M1 to M60.
Jam Nuts are available on the FCH Network in materials that range from Steel to Silicon Bronze
Jam Nuts Finishes
Jam Nuts are available on the FCH Network in finishes or coatings that range from Plain to Tin