78351-820 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

78351-820: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL COMP 601 OVERALL, nut_style: DOUBLE HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 2B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-137-8981, 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

78351-820

NSN: 5310-01-137-8981
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	STEEL COMP 601 OVERALL
nut_style	DOUBLE HEXAGON
lubrication	DRY FILM LUBRICANT
temp_rating	450.0 FAHRENHEIT MAXIMUM DEGF
thread_class	2B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.578 INCHES MAXIMUM IN
hardness_rating	45.0 ROCKWELL C MAXIMUM
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.090 INCHES NOMINAL IN
surface_treatment	CADMIUM OVERALL
NSN	5310-01-137-8981

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.880 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2401 ASSN STD SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF

•

HARDNESS RATING: 45.0 ROCKWELL C MAXIMUM

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.578 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.880 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2401 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	450.0 FAHRENHEIT MAXIMUM DEGF
HARDNESS RATING	45.0 ROCKWELL C MAXIMUM
WASHER THICKNESS	0.090 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE 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

LH12343-8Reference document

Same NSN cross-reference

Reference document — Secondary reference

H50675-8Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

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

Ready to buy 78351-820?

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 78351-820?

78351-820 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace 78351-820?

There are 2 known substitutes for 78351-820: LH12343-8, H50675-8. Substitute compatibility should be verified for your specific system.

What is the NSN for 78351-820?

78351-820 is cataloged in the U.S. Government catalog under NSN 5310-01-137-8981. This indicates validated use in U.S. government and defense supply chains.

Community Feedback

78351-820 — NUT,SELF-LOCKING,EXTENDED WASHER

Request a Quote — 78351-820