74255977 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

74255977: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL UNS S34720 OR STEEL UNS S34723 OVERALL, nut_style: HEXAGON, nut_height: 0.455 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN, temp_rating: 1200.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-020-4738, 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

74255977

NSN: 5310-00-020-4738
FSC: 5310 — Nuts and Washers
CAGE: 6N299 — AGCO CORP PARTS OPN (USA)

SPECIFICATIONS

material	STEEL UNS S34720 OR STEEL UNS S34723 OVERALL
nut_style	HEXAGON
nut_height	0.455 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
temp_rating	1200.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL COARSE (UNC)
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
precious_material	SILVER
surface_treatment	SILVER OVERALL
width_across_flats	0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
nominal_thread_size	0.375 INCHES IN
NSN	5310-00-020-4738

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

PRECIOUS MATERIAL: SILVER

•

TEMP RATING: 1200.0 FAHRENHEIT NOMINAL DEGF

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5642 ASSN STD ALL MATERIAL RESPONSES OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.375 INCHES IN

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
PRECIOUS MATERIAL	SILVER
TEMP RATING	1200.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5642 ASSN STD ALL MATERIAL RESPONSES OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.375 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT	0.455 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 1

4255977Reference 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 74255977?

74255977 is a NUT,SELF-LOCKING,HEXAGON.

What parts can replace 74255977?

There is 1 known substitute for 74255977: 4255977. Substitute compatibility should be verified for your specific system.

What is the NSN for 74255977?

74255977 is cataloged in the U.S. Government catalog under NSN 5310-00-020-4738. This indicates validated use in U.S. government and defense supply chains.

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74255977 — NUT,SELF-LOCKING,HEXAGON

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