31143-R-380 — NUT,PLAIN,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

31143-R-380: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY AND NICKEL ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.776 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-468-6352, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

31143-R-380

NSN: 5310-01-468-6352
FSC: 5310 — Nuts and Washers
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)

SPECIFICATIONS

material	COPPER ALLOY AND NICKEL ALLOY OVERALL
nut_style	HEXAGON
nut_height	0.776 INCHES NOMINAL IN
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
thread_direction	RIGHT-HAND
width_across_flats	1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
nominal_thread_size	0.875 INCHES IN
bearing_surface_type	CHAMFERED
thread_pitch_diameters	+0.8028 TO 0.8110 INCHES IN
thread_quantity_per_inch	9
NSN	5310-01-468-6352

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

THREAD PITCH DIAMETERS: +0.8028 TO 0.8110 INCHES IN

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.875 INCHES IN

•

NUT HEIGHT: 0.776 INCHES NOMINAL IN

•

NUT STYLE: HEXAGON

•

THREAD CLASS: 2B

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
THREAD PITCH DIAMETERS	+0.8028 TO 0.8110 INCHES IN
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.875 INCHES IN
NUT HEIGHT	0.776 INCHES NOMINAL IN
NUT STYLE	HEXAGON
THREAD CLASS	2B
THREAD QUANTITY PER INCH	9
MATERIAL	COPPER ALLOY AND NICKEL ALLOY OVERALL

SUBSTITUTES & CROSS-REFERENCES 2

253871Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

253871 PC 14Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 31143-R-380?

31143-R-380 is a NUT,PLAIN,HEXAGON.

What parts can replace 31143-R-380?

There are 2 known substitutes for 31143-R-380: 253871, 253871 PC 14. Substitute compatibility should be verified for your specific system.

What is the NSN for 31143-R-380?

31143-R-380 is cataloged in the U.S. Government catalog under NSN 5310-01-468-6352. This indicates validated use in U.S. government and defense supply chains.

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31143-R-380 — NUT,PLAIN,HEXAGON

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