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.
Dept. of the Army 
Dept. of the Air Force 
Defense Threat Reduction Agency 
U.s. Marine Corps 
Dept. of the Navy 
U.s. Coast Guard 
Poland 
Brazil 
Spain 
Israel 
Singapore 
Morocco 
Malaysia 
Australia 
Belgium 
Canada 
New Zealand 
France 
Germany 
Republic of Korea 
United Kingdom 
Netherlands 
Portugal 
Denmark 
Norway 
Greece 
Turkey Classification: Press-fasteners, snap-fasteners & press-studs & parts therefor
NSN 5998-00-732-8480
NSN 6645-00-451-6462
NSN 6610-00-232-9485
NSN 7035-01-003-9142
NSN 6240-01-281-8746
NSN 5990-01-512-9129
NSN 5999-01-650-5828
NSN 5996-01-446-5097
NSN 6620-01-085-8688
NSN 5998-01-441-9315
NSN 6150-01-180-2206
NSN 4140-01-200-5032