National Item Identification Number
00-978-6975
009786975
4730-00-978-6975
4730009786975
National Stock Number
Item Name
REDUCER,BOSS
Federal Supply Class
4730
Description
A straight fitting having a boss connection of a different size at each end. Both connections have external or internal machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. Excludes BUSHING (as modified).
Commercial and Government Entity Code (Supplier Data)
81343
81343
81343
81343
Reference Numbers (Part Numbers)
AS18280
AS21915
MIL-F-18280
MS21915-20-12
MS21915-20-12J
MS21915J20-12
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
SURFACE TREAT
Required Description
STEEL COMP 302 OR
STEEL COMP 303 OR
STEEL COMP 304 OR
STEEL COMP 316 OR
STEE