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.
Canada 
Germany 
Netherlands Classification: Press-fasteners, snap-fasteners & press-studs & parts therefor
NSN 5965-01-072-3027
NSN 4140-00-518-2429
NSN 6620-01-467-2111
NSN 6135-01-017-3001
NSN 5920-00-119-1406
NSN 5990-00-738-5245
NSN 5910-00-116-6535
NSN 5855-01-262-1766
NSN 5835-01-080-7784
NSN 6220-01-027-4223
NSN 6110-01-328-4781
NSN 5915-01-574-5139