73781-918 — NUT,PLAIN,CASTELLATED,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

73781-918: NUT,PLAIN,CASTELLATED,HEXAGON.

The NUT,PLAIN,CASTELLATED,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.547 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-175-2813, 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

73781-918

NSN: 5310-01-175-2813
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
nut_style	CASTELLATED, HEXAGON
nut_height	0.547 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
thread_direction	RIGHT-HAND
width_across_flats	0.680 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN
nominal_thread_size	0.5625 INCHES IN
bearing_surface_type	FLAT
material_document_and_classification	AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN	5310-01-175-2813

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.680 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.5625 INCHES IN

•

NUT HEIGHT: 0.547 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN

•

NUT STYLE: CASTELLATED, HEXAGON

•

THREAD CLASS: 3B

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.680 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.5625 INCHES IN
NUT HEIGHT	0.547 INCHES MINIMUM AND 0.579 INCHES MAXIMUM IN
NUT STYLE	CASTELLATED, HEXAGON
THREAD CLASS	3B
MATERIAL	STEEL CORROSION RESISTING OVERALL
BEARING SURFACE TYPE	FLAT

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 4

H49404-9Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

9131M75P27Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

SME9925-9GEReference document

Same NSN cross-reference

Reference document — Secondary reference

9131M75P07Reference document

Same NSN cross-reference

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

LIFECYCLE

NSN statusActive· U.S. Government catalog

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

Ready to buy 73781-918?

Compare prices from verified sellers on eBay

Buy on eBay →

As an eBay Partner, PartsTable may earn a commission. Your price is not affected.

FREQUENTLY ASKED QUESTIONS

What is 73781-918?

73781-918 is a NUT,PLAIN,CASTELLATED,HEXAGON.

What parts can replace 73781-918?

There are 4 known substitutes for 73781-918: H49404-9, 9131M75P27, SME9925-9GE and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 73781-918?

73781-918 is cataloged in the U.S. Government catalog under NSN 5310-01-175-2813. This indicates validated use in U.S. government and defense supply chains.

Community Feedback

73781-918 — NUT,PLAIN,CASTELLATED,HEXAGON

Request a Quote — 73781-918