B831-2412-78 — SHAFT,SHOULDERED

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

B831-2412-78: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, end_similarity: NOT IDENTICAL, overall_length: 6.375 INCHES NOMINAL IN, surface_finish: 32.0 MICROINCHES, first_end_style: FLATTED, second_end_style: CIRCULAR GROOVED AND EXTERNALLY THREADED. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-500-4804, 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

B831-2412-78

NSN: 3040-01-500-4804
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)

SPECIFICATIONS

material	STEEL COMP 304
step_quantity	8
end_similarity	NOT IDENTICAL
overall_length	6.375 INCHES NOMINAL IN
surface_finish	32.0 MICROINCHES
first_end_style	FLATTED
second_end_style	CIRCULAR GROOVED AND EXTERNALLY THREADED
special_features	SECOND END PROVIDED WITH 0.375-16UNC-2A THREADS. 0.125-0.127 WIDE X 0.068-0.085 DEEP KEYWAY SLOT ON SECOND END A
first_end_diameter	0.6230 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
second_end_diameter	0.3750 INCHES NOMINAL IN
first_end_flat_depth	0.1250 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM IN
first_end_flat_length	0.810 INCHES NOMINAL IN
NSN	3040-01-500-4804

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES

•

SECOND END EXTERNAL THREAD LENGTH: 0.560 INCHES NOMINAL IN

•

STEP QUANTITY: 8

•

FIRST END DIAMETER: 0.6230 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN

•

FIRST END FLAT DEPTH: 0.1250 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM IN

•

SECOND END DIAMETER: 0.3750 INCHES NOMINAL IN

•

LARGEST STEP DIAMETER: 1.750 INCHES NOMINAL IN

•

FIRST END STYLE: FLATTED

TECHNICAL CHARACTERISTICS

SURFACE FINISH	32.0 MICROINCHES
SECOND END EXTERNAL THREAD LENGTH	0.560 INCHES NOMINAL IN
STEP QUANTITY	8
FIRST END DIAMETER	0.6230 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
FIRST END FLAT DEPTH	0.1250 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM IN
SECOND END DIAMETER	0.3750 INCHES NOMINAL IN
LARGEST STEP DIAMETER	1.750 INCHES NOMINAL IN
FIRST END STYLE	FLATTED
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763 CLASS-304,CONDITION-A FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH	6.375 INCHES NOMINAL IN

SUBSTITUTES & CROSS-REFERENCES 1

596-7409917Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

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 B831-2412-78?

B831-2412-78 is a SHAFT,SHOULDERED.

What parts can replace B831-2412-78?

There is 1 known substitute for B831-2412-78: 596-7409917. Substitute compatibility should be verified for your specific system.

What is the NSN for B831-2412-78?

B831-2412-78 is cataloged in the U.S. Government catalog under NSN 3040-01-500-4804. This indicates validated use in U.S. government and defense supply chains.

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