Set Screw "Jam" Nut for 3340 Marcy 4 x 6 Crusher (# 35)

Set Screw "Jam" Nut for 3340 Marcy 4 x 6 Jaw Crusher (# 35)

Jam hex nuts tighten against the main fastening nut to prevent unwanted rotation. They are generally half the height of regular hex nuts and sometimes thinner for the same inner diameter.