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12590673 — EXTENSION SHAFT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

12590673: EXTENSION SHAFT.

The EXTENSION SHAFT is a the manufacturer industrial component. Key specifications include length: 9.75 INCHES NOMINAL IN, material: STEEL, special_features: OVERALL DIAMETER: 0.75 INCHES IN, style_designator: FLATTED, shaft_end_diameter: 5.0 INCHES NOMINAL IN, end_item_identification: MEDIUM MINE PROTECTED VEHICLE - MMPV. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-644-2008, 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
12590673
NSN: 3040-01-644-2008
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
length9.75 INCHES NOMINAL IN
materialSTEEL
special_featuresOVERALL DIAMETER: 0.75 INCHES IN
style_designatorFLATTED
shaft_end_diameter5.0 INCHES NOMINAL IN
end_item_identificationMEDIUM MINE PROTECTED VEHICLE - MMPV
shaft_end_configurationFLATTED ROUND AND SQUARE
material_document_and_classificationSTEEL ROUND, IAW ASTM A108 ASSN STD ALL MATERIAL RESPONSES
part_name_assigned_by_controlling_agencyROD,SHAFT EXTENSION
NSN3040-01-644-2008
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available EXTENSION SHAFT TITLE COMPONENT PN 12590673 MFR EXTENSION SHAFT
KEY FEATURES
•
LENGTH: 9.75 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLATTED
•
MATERIAL DOCUMENT AND CLASSIFICATION: STEEL ROUND, IAW ASTM A108 ASSN STD ALL MATERIAL RESPONSES
•
SHAFT END DIAMETER: 5.0 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
LENGTH9.75 INCHES NOMINAL IN
STYLE DESIGNATORFLATTED
MATERIAL DOCUMENT AND CLASSIFICATIONSTEEL ROUND, IAW ASTM A108 ASSN STD ALL MATERIAL RESPONSES
SHAFT END DIAMETER5.0 INCHES NOMINAL IN
SPECIAL FEATURESOVERALL DIAMETER: 0.75 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYROD,SHAFT EXTENSION
END ITEM IDENTIFICATIONMEDIUM MINE PROTECTED VEHICLE - MMPV
MATERIALSTEEL
SHAFT END CONFIGURATIONFLATTED ROUND AND SQUARE
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

No substitute or cross-reference records for this part.

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 12590673?
12590673 is a EXTENSION SHAFT.
What is the NSN for 12590673?
12590673 is cataloged in the U.S. Government catalog under NSN 3040-01-644-2008. 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.