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

Tube Coupling Nut

Model / MPN: 261P1-4 | NSN: 4730-00-817-1891
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
4730-00-817-1891
Sold in multiples of
5 EA
DEMIL
NO
Thread Class
3b
Thread Direction
Right-hand
Fabrication Method
Cast
Nut Style
Tube coupling
Nut Height
Between 0.343 inches and 0.375 inches
Width Across Flats
0.437 inches
Length To Shoulder
0.359 inches
Smallest Inside Diameter
0.266 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
20
Thread Size
0.437 inches
Tube Outside Diameter
0.250 inches
Material
Copper alloy 360 nut
261P1 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M115TH892 Nut, Tube Coupling 4194 EA 04/23/2015
SPE7M515T8809 Nut, Tube Coupling 7270 EA 07/06/2015
SPE7M117TB018 Nut, Tube Coupling 3700 EA 03/16/2017
SPE7M318T9574 Nut, Tube Coupling 6000 EA 06/21/2018
SPE7M318T128K Nut, Tube Coupling 10000 EA 09/04/2018
SPE7M319T5900 Nut, Tube Coupling 12500 EA 02/21/2019

Pricing and Availability

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261P1-4 Cross Reference
  • 261-PX1/4
  • 61P-4
  • 261-PX1/4
  • 61P-4
  • 261-PX1/4
  • 61P-4
  • 261-PX1/4
  • 61P-4