2 radial notches in flange periphery 180 degrees apart, counterbored opposite flange drill no 19 /0.166 in/ or drill 18 /0.170 in/ by 0.531 in depth
A cylindrical item which may have wrenching and/or driving facilities and/or shoulders. It is designed to be inserted in a drilled or a pretapped hole, or molded or pressed into soft material to reduce the size of a tapped hole; to provide threads; to add strength, and/or to prevent stripping. It is one of the following: (1) a one-piece, flanged or unflanged, internally threaded item which may have external threads, and/or serrations around the periphery of the collar, designed to engage a serrated lock ring which is not included with the item; (2) a one-piece precision coiled wire; (3) a two-piece item consisting of an internally threaded cylinder and a mating externally threaded part; or (4) a one-piece internally threaded item whose outside diameter is tapered and/or knurled and/or with fin(s). The internal thread of the item may have a locking feature. Excludes items having a sleeve on its underportion which can be clinched or crimped. Excludes bushing, machine thread; nut, plain, knurled; nut, plain, round; nut, plain, clinch and nut, self-locking, clinch. See also nut, plain, plate.
Classification: Press-fasteners, snap-fasteners & press-studs & parts therefor
NSN 5920-00-699-1927
NSN 5915-00-152-9624
NSN 6610-00-903-6095
NSN 5935-00-094-0579
NSN 5935-00-983-4946
NSN 5990-01-194-7619
NSN 5996-00-983-0741
NSN 5915-00-587-2521
NSN 5990-00-164-1677
NSN 6145-01-518-3025
NSN 2925-01-016-3111
NSN 5998-01-279-3126