H42-3LH — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

H42-3LH: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.188 INCHES MAXIMUM IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-125-0399, 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

H42-3LH

NSN: 5310-01-125-0399
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
nut_style	HEXAGON
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.188 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	LEFT-HAND
width_across_flats	0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
nominal_thread_size	0.190 INCHES IN
washer_outside_diameter	0.330 INCHES MAXIMUM IN
thread_quantity_per_inch	32
NSN	5310-01-125-0399

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.330 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

THREAD DIRECTION: LEFT-HAND

•

NOMINAL THREAD SIZE: 0.190 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN

•

NUT STYLE: HEXAGON

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.188 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.330 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.243 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD DIRECTION	LEFT-HAND
NOMINAL THREAD SIZE	0.190 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT STYLE	HEXAGON
THREAD CLASS	3B
THREAD QUANTITY PER INCH	32

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

10200404Reference document

Same NSN cross-reference

Reference document — Informative reference only

C014380-1Reference 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 H42-3LH?

H42-3LH is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace H42-3LH?

There are 2 known substitutes for H42-3LH: 10200404, C014380-1. Substitute compatibility should be verified for your specific system.

What is the NSN for H42-3LH?

H42-3LH is cataloged in the U.S. Government catalog under NSN 5310-01-125-0399. This indicates validated use in U.S. government and defense supply chains.

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H42-3LH — NUT,SELF-LOCKING,EXTENDED WASHER

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