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.
Israel 
Germany 
Republic of Korea 
Italy 
Greece 
Turkey 
NATO Maintenance and Supply Agency Classification: Press-fasteners, snap-fasteners & press-studs & parts therefor
NSN 6620-00-310-4058
NSN 5915-01-361-9136
NSN 5996-01-326-0330
NSN 6610-01-113-2726
NSN 5835-00-946-2656
NSN 6650-01-025-8803
NSN 5998-01-570-9707
NSN 5999-01-546-4801
NSN 5965-01-112-8758
NSN 2925-01-599-1901
NSN 5855-01-453-1549
NSN 5910-01-656-5929