H51120A4 — NUT,SELF-LOCKING,ASSEMBLED WASHE

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

H51120A4: NUT,SELF-LOCKING,ASSEMBLED WASHE.

NUT,SELF-LOCKING,ASSEMBLED WASHE. Key specifications include material: IRON ALLOY 660 WASHER, nut_style: FLAT, nut_height: 0.090 INCHES NOMINAL IN, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-131-9867, 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

H51120A4

NSN: 5310-01-131-9867
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 WASHER
nut_style	FLAT
nut_height	0.090 INCHES NOMINAL IN
lubrication	DRY FILM LUBRICANT
temp_rating	450.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.292 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
special_features	CONCAVE SELF-ALIGNING WASHER
thread_direction	RIGHT-HAND
surface_treatment	PASSIVATE NUT
NSN	5310-01-131-9867

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.515 INCHES NOMINAL IN

•

WIDTH ACROSS FLATS: 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.292 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.515 INCHES NOMINAL IN
WIDTH ACROSS FLATS	0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	450.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE WASHER
NUT COUNTERBORE DEPTH	0.065 INCHES NOMINAL NUT IN
THREAD DIRECTION	RIGHT-HAND

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

10109622Reference 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 H51120A4?

H51120A4 is a NUT,SELF-LOCKING,ASSEMBLED WASHE.

What parts can replace H51120A4?

There is 1 known substitute for H51120A4: 10109622. Substitute compatibility should be verified for your specific system.

What is the NSN for H51120A4?

H51120A4 is cataloged in the U.S. Government catalog under NSN 5310-01-131-9867. This indicates validated use in U.S. government and defense supply chains.

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H51120A4 — NUT,SELF-LOCKING,ASSEMBLED WASHE

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