Jam nuts are thin nuts that are assembled with regular nuts to lock both nuts in place. The jam nut helps prevent loosening by providing extra resistance.
Hex Jam Nut, 1-14 – AERO Specialties
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Hex jam nuts nominal height ~0.5d
SPL Parts 1-12 Left Hand Titanium Blue Jam Nut
Jam Nuts
Fasteners - Nuts - Jam Nuts - Edmonton Fasteners & Tools Ltd.
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SS 1/2 NPT JAM NUTS
Jam Nuts
What Are Jam Nuts? and How To Use Them - Albany County Fasteners
Hex Jam Nuts On Morton Machine Works