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

Tube Fitting Locknut

Model / MPN: 81973-428 | NSN: 4730-01-151-0650
ITAR Registered seal

An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing rin (s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1) , plain, hexagon.

Product Details
NATO Stock Number
4730-01-151-0650
Sold in multiples of
50 EA
DEMIL
NO
Thread Class
3b
Thread Direction
Right-hand
Fabrication Method
Any acceptable
Thread Series
Unjf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Tube Outside Diameter
0.320 inches
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M318T1004 Locknut, Tube Fittin 12737 EA 11/17/2017
SPE7M318T1260 Locknut, Tube Fittin 2095 EA 12/01/2017
SPE7M319T195A Locknut, Tube Fittin 3933 EA 10/07/2019
SPE7M320T0911 Locknut, Tube Fittin 5292 EA 10/31/2019

Pricing and Availability

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81973-428 Cross Reference
  • 4055T70
  • H50539-4
  • 4055T70P03
  • 4055T70P01
  • E12283-4
  • 4055T70P02
  • 10159593