H51348-4 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

H51348-4: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL EXCEPT INSERT, nut_style: DOUBLE HEXAGON, lubrication: DRY FILM LUBRICANT, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.350 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-215-9822, 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

H51348-4

NSN: 5310-01-215-9822
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL EXCEPT INSERT
nut_style	DOUBLE HEXAGON
lubrication	DRY FILM LUBRICANT
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.350 INCHES MAXIMUM IN
hardness_rating	29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
locking_feature	PREVAILING TORQUE WITH NONMETALLIC INSERT
thread_direction	RIGHT-HAND
washer_thickness	0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
width_across_flats	0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
nominal_thread_size	0.250 INCHES IN
NSN	5310-01-215-9822

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.531 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

HARDNESS RATING: 29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM

•

WASHER THICKNESS: 0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: A50TF146,CL A,FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE LOCKING INSERT

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.350 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.531 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING	29.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
WASHER THICKNESS	0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	A50TF146,CL A,FSCM 07482 MFR REF SINGLE MATERIAL RESPONSE LOCKING INSERT
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT
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

1156M97P01Same 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 H51348-4?

H51348-4 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace H51348-4?

There is 1 known substitute for H51348-4: 1156M97P01. Substitute compatibility should be verified for your specific system.

What is the NSN for H51348-4?

H51348-4 is cataloged in the U.S. Government catalog under NSN 5310-01-215-9822. This indicates validated use in U.S. government and defense supply chains.

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H51348-4 — NUT,SELF-LOCKING,EXTENDED WASHER

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