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639972 — 639972

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

639972: 639972.

The 639972 is a the manufacturer industrial component. Key specifications include material: STEEL, construction: ONE-PIECE, outside_diameter: 1.750 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 1.141 INCHES NOMINAL IN, fsc_application_data: DRIVING AXLE PINION BEARING,TRUCK. This part is cataloged in the U.S.

Government catalog under NSN 5365-00-495-9588, 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
639972
NSN: 5365-00-495-9588
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialSTEEL
constructionONE-PIECE
outside_diameter1.750 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter1.141 INCHES NOMINAL IN
fsc_application_dataDRIVING AXLE PINION BEARING,TRUCK
NSN5365-00-495-9588
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 639972 TITLE COMPONENT PN 639972 MFR 639972
KEY FEATURES
•
FSC APPLICATION DATA: DRIVING AXLE PINION BEARING,TRUCK
•
STYLE DESIGNATOR: CIRCULAR
•
OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
APERTURE DIAMETER: 1.141 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
CONSTRUCTION: ONE-PIECE
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATADRIVING AXLE PINION BEARING,TRUCK
STYLE DESIGNATORCIRCULAR
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
APERTURE DIAMETER1.141 INCHES NOMINAL IN
MATERIALSTEEL
CONSTRUCTIONONE-PIECE
SUBSTITUTES & CROSS-REFERENCES 6
GP4659AReference document
Same NSN cross-reference
Reference document — Secondary reference
R21213Reference document
Same NSN cross-reference
Reference document — Secondary reference
30207-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
80550Reference document
Same NSN cross-reference
Reference document — Secondary reference
A803Reference document
Same NSN cross-reference
Reference document — Secondary reference
S638Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 639972?
639972 is a 639972.
What parts can replace 639972?
There are 6 known substitutes for 639972: GP4659A, R21213, 30207-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 639972?
639972 is cataloged in the U.S. Government catalog under NSN 5365-00-495-9588. 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.