National Item Identification Number
00-640-5042
006405042
4730-00-640-5042
4730006405042
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
NSN (National Stock Number) 4730-00-640-5042, 4730006405042 NIIN (National Identification Number) 00-640-5042, 006405042
Part Numbers (Reference Numbers)
AS21916
ER919D12-8
MS21916D12-8
MS21916D12-8
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
CONNECTION TY
Required Description
ALUMINUM ALLOY 2024 OVERALL
QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVE