021-31578-000 — NUT,PLAIN,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

021-31578-000: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), special_features: NHA: MARINEPAK, 300 TON DUPLEX R-114, WATER COOLING SYSTEM, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-554-8735, 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

021-31578-000

NSN: 5310-01-554-8735
FSC: 5310 — Nuts and Washers
CAGE: 66935 — JOHNSON CONTROLS NAVY SYSTEMS, LLC (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	HEXAGON
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
special_features	NHA: MARINEPAK, 300 TON DUPLEX R-114, WATER COOLING SYSTEM
thread_direction	RIGHT-HAND
nominal_thread_size	0.875 INCHES IN
end_item_identification	SSN-688 CLASS SUBMARINE
thread_quantity_per_inch	9
material_document_and_classification	SAE J-995 GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN	5310-01-554-8735

COMPONENT DIAGRAM

KEY FEATURES

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

MATERIAL DOCUMENT AND CLASSIFICATION: SAE J-995 GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.875 INCHES IN

•

NUT STYLE: HEXAGON

•

THREAD CLASS: 2B

TECHNICAL CHARACTERISTICS

THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATION	SAE J-995 GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.875 INCHES IN
SPECIAL FEATURES	NHA: MARINEPAK, 300 TON DUPLEX R-114, WATER COOLING SYSTEM
NUT STYLE	HEXAGON
THREAD CLASS	2B
END ITEM IDENTIFICATION	SSN-688 CLASS SUBMARINE
THREAD QUANTITY PER INCH	9
MATERIAL	STEEL 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 1

477-15979-000 ITEM 83Reference 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 021-31578-000?

021-31578-000 is a NUT,PLAIN,HEXAGON.

What parts can replace 021-31578-000?

There is 1 known substitute for 021-31578-000: 477-15979-000 ITEM 83. Substitute compatibility should be verified for your specific system.

What is the NSN for 021-31578-000?

021-31578-000 is cataloged in the U.S. Government catalog under NSN 5310-01-554-8735. This indicates validated use in U.S. government and defense supply chains.

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021-31578-000 — NUT,PLAIN,HEXAGON

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