FAC1421-524 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

FAC1421-524: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: DOUBLE HEXAGON, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.396 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-915-1212, 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

FAC1421-524

NSN: 5310-00-915-1212
FSC: 5310 — Nuts and Washers
CAGE: 23974 — CRESTVIEW AEROSPACE LLC DIV CRESTVIEW AEROSPACE (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	DOUBLE HEXAGON
temp_rating	450.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.396 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.090 INCHES NOMINAL IN
surface_treatment	CADMIUM OVERALL
width_across_flats	0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
nominal_thread_size	0.312 INCHES IN
NSN	5310-00-915-1212

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.593 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF

•

WASHER THICKNESS: 0.090 INCHES NOMINAL IN

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.396 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.593 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	450.0 FAHRENHEIT NOMINAL DEGF
WASHER THICKNESS	0.090 INCHES NOMINAL IN
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.312 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN

SUBSTITUTES & CROSS-REFERENCES 4

ZEB1845-054Reference document

Same NSN cross-reference

Reference document — Secondary reference

42FW524Reference document

Same NSN cross-reference

Reference document — Secondary reference

A29185-2Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

DHT335Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is FAC1421-524?

FAC1421-524 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace FAC1421-524?

There are 4 known substitutes for FAC1421-524: ZEB1845-054, 42FW524, A29185-2 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for FAC1421-524?

FAC1421-524 is cataloged in the U.S. Government catalog under NSN 5310-00-915-1212. This indicates validated use in U.S. government and defense supply chains.

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