Material per federal standard 66, carbon or aisi alloy, .27-.46c; heat treated to rockwell hardness c25-c31; open end thread to 0.875-14 unf-2b; thread lg.=1.250 in.
An item specifically designed to fit into or over the opening(s) of various items to provide mechanical protection and/or to prevent the entrance of foreign matter during painting, shipping, storage, or the like. It is not designed to retain fluids under pressure during equipment operation. For items designed to fit only into an opening, see plug (as modified) and stopper (as modified). For items designed to fit only over an opening, see boot (as modified); cap (as modified); cover (as modified); and hood (as modified).
Classification: Gaskets,washers & other seals
NSN 5925-00-943-0250
NSN 5985-00-786-5601
NSN 5925-01-035-5643
NSN 6650-01-633-9147
NSN 6620-01-461-0899
NSN 6610-01-233-5857
NSN 5915-01-151-7614
NSN 5930-01-447-5832
NSN 5855-01-495-1045
NSN 5835-01-495-0595
NSN 6110-01-471-0099
NSN 6620-01-354-2824