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 5985-01-548-8331
NSN 5960-01-367-0981
NSN 2925-01-535-7235
NSN 6610-01-265-1824
NSN 5975-00-107-8198
NSN 5950-01-477-7761
NSN 5905-00-732-2731
NSN 5910-00-422-2480
NSN 6610-00-115-9414
NSN 6220-01-587-8437
NSN 5965-01-454-6185
NSN 6110-01-452-2157