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4K0731 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

4K0731: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL, end_similarity: IDENTICAL, overall_length: 10.220 INCHES NOMINAL IN, first_end_style: EXTERNAL THREADED, first_end_diameter: 1.1250 INCHES NOMINAL IN, largest_step_diameter: 1.518 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-101-1687, 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
4K0731
NSN: 3040-00-101-1687
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
step_quantity3
end_similarityIDENTICAL
overall_length10.220 INCHES NOMINAL IN
first_end_styleEXTERNAL THREADED
first_end_diameter1.1250 INCHES NOMINAL IN
largest_step_diameter1.518 INCHES NOMINAL IN
first_end_external_thread_length1.125 INCHES NOMINAL IN
NSN3040-00-101-1687
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN 4K0731 MFR SHAFT,SHOULDERED
KEY FEATURES
•
STEP QUANTITY: 3
•
FIRST END DIAMETER: 1.1250 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 1.518 INCHES NOMINAL IN
•
FIRST END EXTERNAL THREAD LENGTH: 1.125 INCHES NOMINAL IN
•
FIRST END STYLE: EXTERNAL THREADED
•
END SIMILARITY: IDENTICAL
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
STEP QUANTITY3
FIRST END DIAMETER1.1250 INCHES NOMINAL IN
LARGEST STEP DIAMETER1.518 INCHES NOMINAL IN
FIRST END EXTERNAL THREAD LENGTH1.125 INCHES NOMINAL IN
FIRST END STYLEEXTERNAL THREADED
OVERALL LENGTH10.220 INCHES NOMINAL IN
END SIMILARITYIDENTICAL
MATERIALSTEEL
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
4K731Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4K0731?
4K0731 is a SHAFT,SHOULDERED.
What parts can replace 4K0731?
There is 1 known substitute for 4K0731: 4K731. Substitute compatibility should be verified for your specific system.
What is the NSN for 4K0731?
4K0731 is cataloged in the U.S. Government catalog under NSN 3040-00-101-1687. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.