C4520-12 — NUT,SELF-LOCKING,ASSEMBLED WASHE

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

C4520-12: NUT,SELF-LOCKING,ASSEMBLED WASHE.

NUT,SELF-LOCKING,ASSEMBLED WASHE. Key specifications include material: STEEL COMP 8740 OVERALL, nut_style: FLAT WITH TURNED UP EDGE, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.931 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-406-3010, 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

C4520-12

NSN: 5310-01-406-3010
FSC: 5310 — Nuts and Washers
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)

SPECIFICATIONS

material	STEEL COMP 8740 OVERALL
nut_style	FLAT WITH TURNED UP EDGE
temp_rating	450.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.931 INCHES NOMINAL IN
locking_feature	FREE-RUNNING ALL METAL DESIGN
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM OVERALL
width_across_flats	0.934 INCHES NOMINAL IN
nominal_thread_size	0.750 INCHES IN
washer_outside_diameter	1.440 INCHES NOMINAL IN
NSN	5310-01-406-3010

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 1.440 INCHES NOMINAL IN

•

WIDTH ACROSS FLATS: 0.934 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6040 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.931 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER	1.440 INCHES NOMINAL IN
WIDTH ACROSS FLATS	0.934 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	450.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6040 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.750 INCHES IN
LOCKING FEATURE	FREE-RUNNING ALL METAL DESIGN

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

TLN1010L12Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is C4520-12?

C4520-12 is a NUT,SELF-LOCKING,ASSEMBLED WASHE.

What parts can replace C4520-12?

There is 1 known substitute for C4520-12: TLN1010L12. Substitute compatibility should be verified for your specific system.

What is the NSN for C4520-12?

C4520-12 is cataloged in the U.S. Government catalog under NSN 5310-01-406-3010. This indicates validated use in U.S. government and defense supply chains.

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C4520-12 — NUT,SELF-LOCKING,ASSEMBLED WASHE

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