B831-4120-1 — SHAFT,SHOULDERED

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

B831-4120-1: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, end_similarity: NOT IDENTICAL, overall_length: 15.810 INCHES NOMINAL IN, first_end_style: FLAT KEYWAY, second_end_style: SPLINED (STRAIGHT), special_features: THREADED AREA 6.0 IN LENGTH .875-6-ACME-2G LEFT HAND. G.

This part is cataloged in the U.S. Government catalog under NSN 3040-01-495-9445, 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

B831-4120-1

NSN: 3040-01-495-9445
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING
step_quantity	5
end_similarity	NOT IDENTICAL
overall_length	15.810 INCHES NOMINAL IN
first_end_style	FLAT KEYWAY
second_end_style	SPLINED (STRAIGHT)
special_features	THREADED AREA 6.0 IN LENGTH .875-6-ACME-2G LEFT HAND. G
first_end_diameter	0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
second_end_diameter	0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
largest_step_diameter	1.250 INCHES NOMINAL IN
external_keyway_length	2.375 INCHES NOMINAL FIRST END IN
first_end_keyway_depth	0.107 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
NSN	3040-01-495-9445

COMPONENT DIAGRAM

KEY FEATURES

•

STEP QUANTITY: 5

•

FIRST END DIAMETER: 0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN

•

SECOND END DIAMETER: 0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN

•

LARGEST STEP DIAMETER: 1.250 INCHES NOMINAL IN

•

SECOND END SPLINE MINOR DIAMETER: 0.5220 INCHES MINIMUM AND 0.5320 INCHES MAXIMUM IN

•

FIRST END STYLE: FLAT KEYWAY

•

SECOND END SPLINE MAJOR DIAMETER: 0.6220 INCHES MINIMUM AND 0.6230 INCHES MAXIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-A564, TY-630 NATIONAL SPEC ALL MATERIAL RESPONSES

TECHNICAL CHARACTERISTICS

STEP QUANTITY	5
FIRST END DIAMETER	0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
SECOND END DIAMETER	0.6230 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
LARGEST STEP DIAMETER	1.250 INCHES NOMINAL IN
SECOND END SPLINE MINOR DIAMETER	0.5220 INCHES MINIMUM AND 0.5320 INCHES MAXIMUM IN
FIRST END STYLE	FLAT KEYWAY
SECOND END SPLINE MAJOR DIAMETER	0.6220 INCHES MINIMUM AND 0.6230 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM-A564, TY-630 NATIONAL SPEC ALL MATERIAL RESPONSES
OVERALL LENGTH	15.810 INCHES NOMINAL IN
FIRST END KEYWAY DEPTH	0.107 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 2

B831-4120Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

596-7409700Reference 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 B831-4120-1?

B831-4120-1 is a SHAFT,SHOULDERED.

What parts can replace B831-4120-1?

There are 2 known substitutes for B831-4120-1: B831-4120, 596-7409700. Substitute compatibility should be verified for your specific system.

What is the NSN for B831-4120-1?

B831-4120-1 is cataloged in the U.S. Government catalog under NSN 3040-01-495-9445. This indicates validated use in U.S. government and defense supply chains.

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