LH12343-4 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

LH12343-4: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OR STEEL COMP H11 OVERALL, nut_style: DOUBLE HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-103-7935, 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

LH12343-4

NSN: 5310-01-103-7935
FSC: 5310 — Nuts and Washers
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)

SPECIFICATIONS

material	STEEL OR STEEL COMP H11 OVERALL
nut_style	DOUBLE HEXAGON
lubrication	DRY FILM LUBRICANT
temp_rating	450.0 FAHRENHEIT MAXIMUM DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.328 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.050 INCHES NOMINAL IN
surface_treatment	CADMIUM AND CHROMATE OVERALL
width_across_flats	0.304 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
NSN	5310-01-103-7935

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.458 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.304 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS2401 ASSN STD ALL TREATMENT RESPONSES OVERALL

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF

•

WASHER THICKNESS: 0.050 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.328 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.458 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.304 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS2401 ASSN STD ALL TREATMENT RESPONSES OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	450.0 FAHRENHEIT MAXIMUM DEGF
WASHER THICKNESS	0.050 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS6304 ASSN STD 1ST MATERIAL RESPONSE OR AMS6487 ASSN STD 2ND MATERIAL RESPONSE OVERALL
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 3

78351-428Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

ST3M737-4Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

H50675-4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 LH12343-4?

LH12343-4 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace LH12343-4?

There are 3 known substitutes for LH12343-4: 78351-428, ST3M737-4, H50675-4. Substitute compatibility should be verified for your specific system.

What is the NSN for LH12343-4?

LH12343-4 is cataloged in the U.S. Government catalog under NSN 5310-01-103-7935. This indicates validated use in U.S. government and defense supply chains.

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LH12343-4 — NUT,SELF-LOCKING,EXTENDED WASHER

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