91851A033 — NUT,PLAIN,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

91851A033: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: HEXAGON, nut_height: 0.277 INCHES MINIMUM AND 0.317 INCHES MAXIMUM 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 5310-01-255-2693, 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

91851A033

NSN: 5310-01-255-2693
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL COMP 303 OVERALL
nut_style	HEXAGON
nut_height	0.277 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
thread_direction	RIGHT-HAND
width_across_flats	0.850 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
nominal_thread_size	0.500 INCHES IN
bearing_surface_type	CHAMFERED
thread_quantity_per_inch	13
nondefinitive_spec/std_data	4 TYPE AND B STYLE AND 303 GRADE
NSN	5310-01-255-2693

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.850 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.500 INCHES IN

•

NONDEFINITIVE SPEC/STD DATA: 4 TYPE AND B STYLE AND 303 GRADE

•

NUT HEIGHT: 0.277 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN

•

NUT STYLE: HEXAGON

•

THREAD CLASS: 2B

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.850 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.500 INCHES IN
NONDEFINITIVE SPEC/STD DATA	4 TYPE AND B STYLE AND 303 GRADE
NUT HEIGHT	0.277 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
NUT STYLE	HEXAGON
THREAD CLASS	2B
THREAD QUANTITY PER INCH	13
MATERIAL	STEEL COMP 303 OVERALL

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 2

MIL-S-1222Reference document

Same NSN cross-reference

Reference document — Secondary reference

MIL-DTL-1222Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 91851A033?

91851A033 is a NUT,PLAIN,HEXAGON.

What parts can replace 91851A033?

There are 2 known substitutes for 91851A033: MIL-S-1222, MIL-DTL-1222. Substitute compatibility should be verified for your specific system.

What is the NSN for 91851A033?

91851A033 is cataloged in the U.S. Government catalog under NSN 5310-01-255-2693. This indicates validated use in U.S. government and defense supply chains.

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91851A033 — NUT,PLAIN,HEXAGON

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