91831A031 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

91831A031: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 NUT, nut_style: HEXAGON, nut_height: 0.4531 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-475-9244, 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

91831A031

NSN: 5310-01-475-9244
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL COMP 302 NUT
nut_style	HEXAGON
nut_height	0.4531 INCHES NOMINAL IN
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
locking_feature	PREVAILING TORQUE WITH NONMETALLIC INSERT
thread_direction	RIGHT-HAND
width_across_flats	0.5625 INCHES NOMINAL IN
nominal_thread_size	0.375 INCHES IN
bearing_surface_type	CHAMFERED
end_item_identification	4920-01-272-5962;SOT EQUIPMENT (SE),B-2 BOMBER; MRAP - COUGAR TOW; MRAP - COUGAR SABR/TOW
thread_quantity_per_inch	16
NSN	5310-01-475-9244

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.5625 INCHES NOMINAL IN

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.375 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT

•

NUT HEIGHT: 0.4531 INCHES NOMINAL IN

•

NUT STYLE: HEXAGON

•

THREAD CLASS: 2B

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.5625 INCHES NOMINAL IN
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.375 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT	0.4531 INCHES NOMINAL IN
NUT STYLE	HEXAGON
THREAD CLASS	2B
END ITEM IDENTIFICATION	4920-01-272-5962;SOT EQUIPMENT (SE),B-2 BOMBER; MRAP - COUGAR TOW; MRAP - COUGAR SABR/TOW
THREAD QUANTITY PER INCH	16

OTHER ITEMS IN FSC 5310 — Nuts and Washers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540

SUBSTITUTES & CROSS-REFERENCES 3

MC91831A127Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

001-010398-000Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

GS24265-47Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 91831A031?

91831A031 is a NUT,SELF-LOCKING,HEXAGON.

What parts can replace 91831A031?

There are 3 known substitutes for 91831A031: MC91831A127, 001-010398-000, GS24265-47. Substitute compatibility should be verified for your specific system.

What is the NSN for 91831A031?

91831A031 is cataloged in the U.S. Government catalog under NSN 5310-01-475-9244. This indicates validated use in U.S. government and defense supply chains.

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91831A031 — NUT,SELF-LOCKING,HEXAGON

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