03-0503 — NUT,PLAIN,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

03-0503: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.370 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNS, thread_direction: LEFT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-312-3681, 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

03-0503

NSN: 5310-01-312-3681
FSC: 5310 — Nuts and Washers
CAGE: 62589 — TRAILER COMPONENT MANUFACTURING INC. (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	HEXAGON
nut_height	0.370 INCHES NOMINAL IN
thread_class	2B
thread_series	UNS
thread_direction	LEFT-HAND
surface_treatment	CADMIUM AND CHROMATE OVERALL
width_across_flats	1.120 INCHES NOMINAL IN
nominal_thread_size	0.687 INCHES IN
bearing_surface_type	FLAT
thread_quantity_per_inch	18
material_document_and_classification	ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN	5310-01-312-3681

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 1.120 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNS

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: LEFT-HAND

•

NOMINAL THREAD SIZE: 0.687 INCHES IN

•

NUT HEIGHT: 0.370 INCHES NOMINAL IN

•

SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	1.120 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY2CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNS
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	LEFT-HAND
NOMINAL THREAD SIZE	0.687 INCHES IN
NUT HEIGHT	0.370 INCHES NOMINAL IN
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
NUT STYLE	HEXAGON
THREAD CLASS	2B

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

1676AS259-2Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

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

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FREQUENTLY ASKED QUESTIONS

What is 03-0503?

03-0503 is a NUT,PLAIN,HEXAGON.

What parts can replace 03-0503?

There is 1 known substitute for 03-0503: 1676AS259-2. Substitute compatibility should be verified for your specific system.

What is the NSN for 03-0503?

03-0503 is cataloged in the U.S. Government catalog under NSN 5310-01-312-3681. This indicates validated use in U.S. government and defense supply chains.

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