90675A030 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

90675A030: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: CASTELLATED HEXAGON, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 0.328 INCHES NOMINAL IN, locking_feature: FREE-RUNNING ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-643-8238, 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

90675A030

NSN: 5310-01-643-8238
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	CASTELLATED HEXAGON
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
overall_height	0.328 INCHES NOMINAL IN
locking_feature	FREE-RUNNING ALL METAL DESIGN
special_features	PER MCMASTER CARR PART NUMBER HAS MULTIPLE SOURCES AND OEM COULD NOT BE PROVIDED
thread_direction	RIGHT-HAND
surface_treatment	ZINC OVERALL
width_across_flats	0.500 INCHES NOMINAL IN
nominal_thread_size	0.312 INCHES IN
end_item_identification	5419-01-539-7180
NSN	5310-01-643-8238

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.578 INCHES NOMINAL IN

•

WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.312 INCHES IN

•

LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.328 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER	0.578 INCHES NOMINAL IN
WIDTH ACROSS FLATS	0.500 INCHES NOMINAL IN
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.312 INCHES IN
LOCKING FEATURE	FREE-RUNNING ALL METAL DESIGN
SPECIAL FEATURES	PER MCMASTER CARR PART NUMBER HAS MULTIPLE SOURCES AND OEM COULD NOT BE PROVIDED
SURFACE TREATMENT	ZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCY	HEX NUT WITH LOCK WASHER

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 1

M1496-837102Reference document

Same NSN cross-reference

Reference document — Informative reference only

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 90675A030?

90675A030 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace 90675A030?

There is 1 known substitute for 90675A030: M1496-837102. Substitute compatibility should be verified for your specific system.

What is the NSN for 90675A030?

90675A030 is cataloged in the U.S. Government catalog under NSN 5310-01-643-8238. This indicates validated use in U.S. government and defense supply chains.

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90675A030 — NUT,SELF-LOCKING,EXTENDED WASHER

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