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

Tube Coupling Nut

Model / MPN: 189331 | NSN: 4730-00-037-3100
ITAR Registered seal

An internally threaded nut which has either an internal seat or shoulder and/or is designed to be used with a ferrule, to mate with the seat of an externally threaded tube fitting to form a leakproof connection. Excludes nut (1), tube coupling, reducing; and nut (1), union.

Product Details
NATO Stock Number
4730-00-037-3100
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Fabrication Method
Forged
Nut Style
Tube coupling
Nut Height
0.421 inches
Largest Outside Diameter
0.625 inches
Width Across Flats
0.691 inches
Length To Shoulder
0.280 inches
Smallest Inside Diameter
0.531 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
20
Thread Size
0.500 inches
Tube Outside Diameter
0.344 inches
Seat Angle
45.00 degrees
Material
Steel comp 303 or steel comp 303se or steel comp 303 plus x
Material Specification
Ams 5640 assn standard all material responses
Surface Treatment
Passivate
18933 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE4A519T785T Nut, Tube Coupling 5 EA 09/27/2019
SPE4A520T2481 Nut, Tube Coupling 5 EA 12/30/2019

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189331 Cross Reference