31X3R — NUT,PLAIN,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

31X3R: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-011-4942, 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

31X3R

NSN: 5310-00-011-4942
FSC: 5310 — Nuts and Washers
CAGE: 83120 — PRESSED METALS OF AMERICA INC (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	HEXAGON
nut_height	0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
thread_class	2B
thread_series	UNF
thread_direction	RIGHT-HAND
surface_treatment	PHOSPHATE OVERALL
width_across_flats	0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
nominal_thread_size	0.375 INCHES IN
bearing_surface_type	CHAMFERED OR WASHER FACED
thread_quantity_per_inch	24
NSN	5310-00-011-4942

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN

•

THREAD SERIES: UNF

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.375 INCHES IN

•

NUT HEIGHT: 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN

•

SURFACE TREATMENT: PHOSPHATE OVERALL

•

NUT STYLE: HEXAGON

•

THREAD CLASS: 2B

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
THREAD SERIES	UNF
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.375 INCHES IN
NUT HEIGHT	0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
SURFACE TREATMENT	PHOSPHATE OVERALL
NUT STYLE	HEXAGON
THREAD CLASS	2B
THREAD QUANTITY PER INCH	24
MATERIAL	STEEL OVERALL

SUBSTITUTES & CROSS-REFERENCES 7

1045064Reference document

Same NSN cross-reference

Reference document — Secondary reference

MS35690-626Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

FFB571TYPEA1Reference document

Same NSN cross-reference

Reference document — Identification reference

114942Reference document

Same NSN cross-reference

Reference document — Secondary reference

33800S2Reference document

Same NSN cross-reference

Reference document — Secondary reference

BBTX1FB5Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 31X3R?

31X3R is a NUT,PLAIN,HEXAGON.

What parts can replace 31X3R?

There are 7 known substitutes for 31X3R: 1045064, MS35690-626, FFB571TYPEA1 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 31X3R?

31X3R is cataloged in the U.S. Government catalog under NSN 5310-00-011-4942. This indicates validated use in U.S. government and defense supply chains.

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