ST33D56-5 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

ST33D56-5: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, nut_height: 0.353 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-063-5071, 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

ST33D56-5

NSN: 5310-01-063-5071
FSC: 5310 — Nuts and Washers
CAGE: 04236 — LOCKHEED MARTIN CORP (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	HEXAGON
nut_height	0.353 INCHES MAXIMUM IN
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
width_across_flats	0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
nominal_thread_size	0.312 INCHES IN
bearing_surface_type	CHAMFERED
thread_quantity_per_inch	18
NSN	5310-01-063-5071

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.312 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN

•

NUT HEIGHT: 0.353 INCHES MAXIMUM IN

•

NUT STYLE: HEXAGON

•

THREAD CLASS: 2B

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.312 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT	0.353 INCHES MAXIMUM IN
NUT STYLE	HEXAGON
THREAD CLASS	2B
THREAD QUANTITY PER INCH	18
MATERIAL	IRON ALLOY 660 OVERALL

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 2

23036114-05Reference document

Same NSN cross-reference

Reference document — Secondary reference

23036382 ITEM NO 45Reference document

Same NSN cross-reference

Reference document — Secondary 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 ST33D56-5?

ST33D56-5 is a NUT,SELF-LOCKING,HEXAGON.

What parts can replace ST33D56-5?

There are 2 known substitutes for ST33D56-5: 23036114-05, 23036382 ITEM NO 45. Substitute compatibility should be verified for your specific system.

What is the NSN for ST33D56-5?

ST33D56-5 is cataloged in the U.S. Government catalog under NSN 5310-01-063-5071. This indicates validated use in U.S. government and defense supply chains.

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ST33D56-5 — NUT,SELF-LOCKING,HEXAGON

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