B831-9521-33 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

B831-9521-33: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY K-500 OVERALL, thread_class: 3A A, fastener_length: 0.875 INCHES NOMINAL IN, special_features: CYLINDRICAL HEAD, thread_direction: RIGHT-HAND, end_item_identification: BALL VALVE,COMBINATION HULL AND BACKUP. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-335-0157, 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

B831-9521-33

NSN: 5305-01-335-0157
FSC: 5305 — Screws
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)

SPECIFICATIONS

material	NICKEL ALLOY K-500 OVERALL
thread_class	3A A
fastener_length	0.875 INCHES NOMINAL IN
special_features	CYLINDRICAL HEAD
thread_direction	RIGHT-HAND
end_item_identification	BALL VALVE,COMBINATION HULL AND BACKUP
nominal_thread_diameter	0.375 INCHES IN
thread_quantity_per_inch	16
thread_series_designator	UNRC
material_document_and_classification	QQ0N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN	5305-01-335-0157

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 0.875 INCHES NOMINAL IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ0N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.375 INCHES IN

•

THREAD DIRECTION: RIGHT-HAND

•

THREAD CLASS: 3A A

•

THREAD QUANTITY PER INCH: 16

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	0.875 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	QQ0N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.375 INCHES IN
THREAD DIRECTION	RIGHT-HAND
SPECIAL FEATURES	CYLINDRICAL HEAD
THREAD CLASS	3A A
END ITEM IDENTIFICATION	BALL VALVE,COMBINATION HULL AND BACKUP
THREAD QUANTITY PER INCH	16
MATERIAL	NICKEL ALLOY K-500 OVERALL
THREAD SERIES DESIGNATOR	UNRC

SUBSTITUTES & CROSS-REFERENCES 9

0.375-16UNRC-3AX0.875LG NICUALReference document

Same NSN cross-reference

Reference document — Identification reference

596-7410251-64Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

B831-9521-64Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

DF330613 FIND 36Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

B434-2410-29Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

596-7410251-33Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 B831-9521-33?

B831-9521-33 is a SCREW,CAP,SOCKET HEAD.

What parts can replace B831-9521-33?

There are 9 known substitutes for B831-9521-33: 0.375-16UNRC-3AX0.875LG NICUAL, 596-7410251-64, B831-9521-64 and 6 more. Substitute compatibility should be verified for your specific system.

What is the NSN for B831-9521-33?

B831-9521-33 is cataloged in the U.S. Government catalog under NSN 5305-01-335-0157. This indicates validated use in U.S. government and defense supply chains.

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