MS21916D12-4 Boss Reducer
4730-00-640-5860
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Official Item Classification
- Name
- Boss Reducer
- Part Number
- MS21916D12-4
- (NSN) National Stock Number
- 4730-00-640-5860
- (FSG) Federal Supply Group
- 47 Pipe, Tubing, Hose, And Fittings
- (FSC) Federal Supply Classification
- 4730 Hose, Pipe, Tube, Lubrication and Railing Fittings
- (INC) Item Name Code
- 23541
- (FIIG) Federal Item Identification Guide
- A080B0
- Date
- 01/01/1963 (63 years ago)
external seat for gasket seal (boss) all ends connection style, concentric reducer type, 3a all ends thread class, threaded external boss all ends connection type, used on boeing vertol cargo transport helicopter, model ch-47 end item identification
Specs & Compatibility
3a all ends
concentric
used on boeing vertol cargo transport helicopter, model ch-47
external seat for gasket seal (boss) all ends
threaded external boss all ends
12 1st end
0.438 inches 2nd end
1.062 inches 1st end
1.531 inches
aluminum alloy 2024 overall
qq-a-225/6,t6 fed spec single material response overall
anodize overall
mil-a-8625 mil spec single treatment response overall
unj 1st end
unjf 2nd end
96906-ms21916 government standard
Regulatory Compliance
Precious metal content is unknown
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
0023541
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