No. 10-32 size designation internal thd by 5/16-18 size designation external thd insert screw thd
A locking device which is serrated on the inside and outside diameters. It may have outer serrations omitted on one or two sides for close edge installation. The inner serrations engage the mating serrations of bolts, inserts, nuts, studs or similar items to be locked in place. The outer serrations broach their way into parent material when driven or pressed into place.
NSN 5910-01-633-9963
NSN 6320-01-129-9656
NSN 6135-00-583-3966
NSN 6650-01-449-1413
NSN 5996-01-039-2704
NSN 5920-01-010-7101
NSN 6135-01-370-9441
NSN 5996-01-652-9693
NSN 6620-01-607-5738
NSN 2925-00-428-6349
NSN 5985-01-573-5144
NSN 5998-00-864-8336