LH9737-4K — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

LH9737-4K: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 850.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-450-2863, 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

LH9737-4K

NSN: 5310-01-450-2863
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	HEXAGON
lubrication	DRY FILM LUBRICANT
temp_rating	850.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.040 INCHES NOMINAL IN
width_across_flats	0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
nominal_thread_size	0.250 INCHES IN
NSN	5310-01-450-2863

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN

•

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

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 850.0 FAHRENHEIT NOMINAL DEGF

•

WASHER THICKNESS: 0.040 INCHES NOMINAL IN

•

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

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	850.0 FAHRENHEIT NOMINAL DEGF
WASHER THICKNESS	0.040 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.250 INCHES IN

SUBSTITUTES & CROSS-REFERENCES 2

H39557-4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

J149P07Same 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 LH9737-4K?

LH9737-4K is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace LH9737-4K?

There are 2 known substitutes for LH9737-4K: H39557-4, J149P07. Substitute compatibility should be verified for your specific system.

What is the NSN for LH9737-4K?

LH9737-4K is cataloged in the U.S. Government catalog under NSN 5310-01-450-2863. This indicates validated use in U.S. government and defense supply chains.

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LH9737-4K — NUT,SELF-LOCKING,EXTENDED WASHER

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