B831-4120 — COLLAR,SHAFT

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

B831-4120: COLLAR,SHAFT.

The COLLAR,SHAFT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thickness: 0.500 INCHES NOMINAL IN, bore_diameter: 0.6250 INCHES MINIMUM AND 0.6260 INCHES MAXIMUM IN, end_similarity: IDENTICAL, overall_length: 15.810 INCHES NOMINAL IN, first_end_style: FLAT KEYWAY. 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

NSN: 3040-01-495-9445
NIINs: 014959445, 014959498, 014959559, 014959852
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING
thickness	0.500 INCHES NOMINAL IN
bore_diameter	0.6250 INCHES MINIMUM AND 0.6260 INCHES MAXIMUM IN
step_quantity	5
end_similarity	IDENTICAL
overall_length	15.810 INCHES NOMINAL IN
first_end_style	FLAT KEYWAY
outside_diameter	1.250 INCHES NOMINAL IN
second_end_style	SPLINED (STRAIGHT)
special_features	THREADED AREA 6.0 IN LENGTH .875-6-ACME-2G LEFT HAND. G
style_designator	PLAIN ROUND
first_end_diameter	0.6230 INCHES MINIMUM AND 0.6240 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

B831-4120-1Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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?

B831-4120 is a COLLAR,SHAFT.

What parts can replace B831-4120?

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

What is the NSN for B831-4120?

B831-4120 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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