LH13439-4 — NUT,PLAIN,EXTENDED WASHER,ROUND

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

LH13439-4: NUT,PLAIN,EXTENDED WASHER,ROUND.

NUT,PLAIN,EXTENDED WASHER,ROUND. Key specifications include material: IRON ALLOY 660 WASHER, nut_style: SPLINE DRIVE, lubrication: DRY FILM LUBRICANT, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.344 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-339-9577, 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

LH13439-4

NSN: 5310-01-339-9577
FSC: 5310 — Nuts and Washers
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 WASHER
nut_style	SPLINE DRIVE
lubrication	DRY FILM LUBRICANT
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.344 INCHES NOMINAL IN
special_features	BEARING SURFACE 63.0 MICROIN,.380 IN. RADIUS; WITH WASHER IN
thread_direction	RIGHT-HAND
washer_thickness	0.240 INCHES MINIMUM IN
surface_treatment	CADMIUM AND CHROMATE NUT
nominal_thread_size	0.250 INCHES IN
drive_point_quantity	12
NSN	5310-01-339-9577

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.597 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

WASHER THICKNESS: 0.240 INCHES MINIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE NUT

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.344 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER	0.597 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
WASHER THICKNESS	0.240 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE NUT
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE WASHER
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.250 INCHES IN

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

3D0095-4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

SN200-4Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is LH13439-4?

LH13439-4 is a NUT,PLAIN,EXTENDED WASHER,ROUND.

What parts can replace LH13439-4?

There are 2 known substitutes for LH13439-4: 3D0095-4, SN200-4. Substitute compatibility should be verified for your specific system.

What is the NSN for LH13439-4?

LH13439-4 is cataloged in the U.S. Government catalog under NSN 5310-01-339-9577. This indicates validated use in U.S. government and defense supply chains.

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LH13439-4 — NUT,PLAIN,EXTENDED WASHER,ROUND

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