83844-428 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

83844-428: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.353 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-486-1023, 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

83844-428

NSN: 5310-01-486-1023
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	DOUBLE HEXAGON
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.353 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.082 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
width_across_flats	0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
nominal_thread_size	0.250 INCHES IN
washer_outside_diameter	0.430 INCHES MAXIMUM IN
thread_quantity_per_inch	28
NSN	5310-01-486-1023

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 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)

•

WASHER THICKNESS: 0.082 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.250 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.353 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	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)
WASHER THICKNESS	0.082 INCHES MINIMUM AND 0.092 INCHES MAXIMUM IN
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.250 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT STYLE	DOUBLE HEXAGON
THREAD CLASS	3B

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 4

ST2436-10Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

ST2437-10Reference document

Same NSN cross-reference

Reference document — Secondary reference

VN4739DF-048Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

H52881-4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 83844-428?

83844-428 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace 83844-428?

There are 4 known substitutes for 83844-428: ST2436-10, ST2437-10, VN4739DF-048 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 83844-428?

83844-428 is cataloged in the U.S. Government catalog under NSN 5310-01-486-1023. This indicates validated use in U.S. government and defense supply chains.

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83844-428 — NUT,SELF-LOCKING,EXTENDED WASHER

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