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Technical Data Sheet
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3A253 — GEAR,DRIVE MOTION

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3A253: GEAR,DRIVE MOTION.

The GEAR,DRIVE MOTION is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL,CORROSION,20 GEAR TEETH,0.13090 PITCH INCHES. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-119-0688, 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
3A253
NSN: 3020-01-119-0688
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 20049 — THE ELECTRIC TACHOMETER CORP. (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,CORROSION,20 GEAR TEETH,0.13090 PITCH INCHES
NSN3020-01-119-0688
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,DRIVE MOTION TITLE COMPONENT PN 3A253 MFR GEAR,DRIVE MOTION
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,CORROSION,20 GEAR TEETH,0.13090 PITCH INCHES
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,CORROSION,20 GEAR TEETH,0.13090 PITCH INCHES
SUBSTITUTES & CROSS-REFERENCES 2
PR3206-1Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
PR3206-1 PIECE 122Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 3A253?
3A253 is a GEAR,DRIVE MOTION.
What parts can replace 3A253?
There are 2 known substitutes for 3A253: PR3206-1, PR3206-1 PIECE 122. Substitute compatibility should be verified for your specific system.
What is the NSN for 3A253?
3A253 is cataloged in the U.S. Government catalog under NSN 3020-01-119-0688. 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.