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Worldwide distributor of NSN parts and consumables located in the USA.

Boss Nipple

Model / MPN: AS21900B | NSN: 4730-00-602-9268
ITAR Registered seal

A straight, one-piece fitting used to join two bosses or boss fittings. Both ends are the same size and have external machine threads (straignt threads other than pipe or hose series). It is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. The center section may be suitably shaped to accommodate a wrench.

Product Details
NATO Stock Number
4730-00-602-9268
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a all ends
End Application
Aircraft application
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Flared w/ gasket seal (boss) 1st end
Connection Type
Threaded external boss all ends
Thread Size
0.500 inches all ends
Nominallength
1.156 inches
Material
Aluminum alloy 2024
Material Specification
Qq-a-225/6, t6 federal specification single material response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625 military specification single treatment response inside
Surface Treatment Specification
Mil-a-8625 military specification single treatment response outside
Style Designator
Flared and flareless w/ center wrenching facility
Thread Series Designator
Unjf all ends
Specification Data
96906-ms21900 government standard and 81349-mil-f-18280 government specification

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AS21900B Cross Reference
  • AS18280B
  • MS21900D5
  • MS21900D5
  • MIL-F-18280
  • MS21900W5