12253M4B — SHAFT,SHOULDERED

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

12253M4B: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: NOT IDENTICAL, overall_length: 4.594 INCHES NOMINAL IN, first_end_style: SQUARE (ROUND CORNERS), second_end_style: CIRCULAR GROOVED AND FLAT KEYWAY, special_features: 1 PIECE MOD ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-503-7835, 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

12253M4B

NSN: 3040-01-503-7835
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 72166 — B.W. ELLIOTT MANUFACTURING CO., LLC (USA)

SPECIFICATIONS

material	STEEL
step_quantity	6
end_similarity	NOT IDENTICAL
overall_length	4.594 INCHES NOMINAL IN
first_end_style	SQUARE (ROUND CORNERS)
second_end_style	CIRCULAR GROOVED AND FLAT KEYWAY
special_features	1 PIECE MOD ASSEMBLY
first_end_diameter	0.8030 INCHES MINIMUM AND 0.8130 INCHES MAXIMUM IN
second_end_diameter	0.6210 INCHES MINIMUM AND 0.6230 INCHES MAXIMUM IN
first_end_step_length	1.3100 INCHES NOMINAL IN
largest_step_diameter	0.803 INCHES MINIMUM AND 0.813 INCHES MAXIMUM IN
external_keyway_length	0.7500 INCHES MINIMUM SECOND END IN
NSN	3040-01-503-7835

COMPONENT DIAGRAM

KEY FEATURES

•

FIRST END WIDTH ACROSS FLATS: 0.6240 INCHES MINIMUM AND 0.6260 INCHES MAXIMUM IN

•

STEP QUANTITY: 6

•

FIRST END DIAMETER: 0.8030 INCHES MINIMUM AND 0.8130 INCHES MAXIMUM IN

•

FIRST END STEP LENGTH: 1.3100 INCHES NOMINAL IN

•

SECOND END DIAMETER: 0.6210 INCHES MINIMUM AND 0.6230 INCHES MAXIMUM IN

•

LARGEST STEP DIAMETER: 0.803 INCHES MINIMUM AND 0.813 INCHES MAXIMUM IN

•

FIRST END STYLE: SQUARE (ROUND CORNERS)

•

SECOND END KEYWAY WIDTH: 0.1890 INCHES MINIMUM AND 0.1910 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

FIRST END WIDTH ACROSS FLATS	0.6240 INCHES MINIMUM AND 0.6260 INCHES MAXIMUM IN
STEP QUANTITY	6
FIRST END DIAMETER	0.8030 INCHES MINIMUM AND 0.8130 INCHES MAXIMUM IN
FIRST END STEP LENGTH	1.3100 INCHES NOMINAL IN
SECOND END DIAMETER	0.6210 INCHES MINIMUM AND 0.6230 INCHES MAXIMUM IN
LARGEST STEP DIAMETER	0.803 INCHES MINIMUM AND 0.813 INCHES MAXIMUM IN
FIRST END STYLE	SQUARE (ROUND CORNERS)
SECOND END KEYWAY WIDTH	0.1890 INCHES MINIMUM AND 0.1910 INCHES MAXIMUM IN
OVERALL LENGTH	4.594 INCHES NOMINAL IN
SECOND END GROOVE DIAMETER	0.6030 INCHES NOMINAL IN

OTHER ITEMS IN FSC 3040 — Miscellaneous Power Transmission Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3040-00-001-0046 3040-00-001-0047 3040-00-001-0048 3040-00-001-0068 3040-00-001-0077 3040-00-001-0078 3040-00-001-0089 3040-00-001-1224

SUBSTITUTES & CROSS-REFERENCES 1

12111M502A ITEM 4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 12253M4B?

12253M4B is a SHAFT,SHOULDERED.

What parts can replace 12253M4B?

There is 1 known substitute for 12253M4B: 12111M502A ITEM 4. Substitute compatibility should be verified for your specific system.

What is the NSN for 12253M4B?

12253M4B is cataloged in the U.S. Government catalog under NSN 3040-01-503-7835. This indicates validated use in U.S. government and defense supply chains.

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12253M4B — SHAFT,SHOULDERED

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