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

Tube To Boss Tee

Model / MPN: 421870-1 | NSN: 4730-00-005-4888
ITAR Registered seal

A fitting having three connections with the branch connection fixed at 90 degrees (1.5705 radians) to the run. The tube connectio (s) has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube, or is unthreaded and designed to accommodate a tube. The boss connection(s) has external or internal machine threads (straight threads other than pipe or hose series), and is designed to facilitate a gasket, preformed packing, washer, or the like, to form a seal at the boss. It may have side inlet(s) . It is used as a junction at the intersection of a tube or fitting and a boss or boss fitting on items such as a tank, housing, valve fitting, or the like. See also tee, tube; and tee, pipe to tube. Excludes connector, multiple, fluid pressure line.

Product Details
NATO Stock Number
4730-00-005-4888
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2a all ends
Connection Style
Double threaded section w/ gasket and locknut sealing (boss) 3rd end
Connection Style
Flared (tube) 1st end
Connection Style
Flared (tube) 2nd end
Leg Length
1.250 inches 1st end
Leg Length
1.250 inches 2nd end
Leg Length
1.450 inches 3rd end
Connection Type
Threaded external boss 3rd end
Connection Type
Threaded external tube 1st end
Connection Type
Threaded external tube 2nd end
Thread Size
0.750 inches all ends
Seat Angle
37.0 degrees 1st end
Seat Angle
37.0 degrees 2nd end
Outside Diameter Tube Accommodated
0.500 inches 1st end
Outside Diameter Tube Accommodated
0.500 inches 2nd end
Material
Steel comp 316
Material Specification
66 federal standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-f-14072, e300, ty2 military specification single treatment response outside
Surface Treatment Specification
Mil-s-5002 military specification single treatment response inside
Thread Series Designator
Unf all ends
Furnished Items And Quantity
1 locknut and 1 preformed packing and 1 flat washer
421870 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M116T1393 Tee, Tube To Boss 66 EA 10/19/2015
SPE7M116T6848 Tee, Tube To Boss 52 EA 11/30/2015
SPE7M217T2389 Tee, Tube To Boss 101 EA 04/10/2017
SPE7M218T1198 Tee, Tube To Boss 169 EA 01/08/2018
SPE7M221T3026 Tee, Tube To Boss 153 EA 04/12/2021

Pricing and Availability

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421870-1 Cross Reference
  • 8S50XSS
  • 8S50XSS
  • 2265147-6
  • 8S50XSS
  • 8S5OXSS