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12081B — GEAR,HELICAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

12081B: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, body_style: WEBBED, SOLID, bore_style: W/ KEYWAY BOTH ENDS, teeth_type: SINGLE HELIX, tooth_form: STANDARD, helix_angle: 23.0333 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-249-9909, 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
12081B
NSN: 3020-00-249-9909
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialIRON OVERALL
body_styleWEBBED, SOLID
bore_styleW/ KEYWAY BOTH ENDS
teeth_typeSINGLE HELIX
tooth_formSTANDARD
helix_angle23.0333 DEGREES
pitch_diameter1.9910 INCHES NOMINAL IN
pressure_angle14.5000 DEGREES
teeth_quantity22
tooth_directionRIGHT
style_designatorFLUSH HUB
face_nominal_width0.500 INCHES IN
NSN3020-00-249-9909
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,HELICAL TITLE COMPONENT PN 12081B MFR GEAR,HELICAL
KEY FEATURES
•
KEYWAY NOMINAL WIDTH: 0.094 INCHES BOTH ENDS IN
•
BORE NOMINAL DIAMETER: 0.500 INCHES BOTH ENDS IN
•
HELIX ANGLE: 23.0333 DEGREES
•
HUB NOMINAL DIAMETER: 0.875 INCHES BOTH ENDS IN
•
TEETH QUANTITY: 22
•
BODY STYLE: WEBBED, SOLID
•
TOOTH DIRECTION: RIGHT
•
BORE STYLE: W/ KEYWAY BOTH ENDS
TECHNICAL CHARACTERISTICS
KEYWAY NOMINAL WIDTH0.094 INCHES BOTH ENDS IN
BORE NOMINAL DIAMETER0.500 INCHES BOTH ENDS IN
HELIX ANGLE23.0333 DEGREES
HUB NOMINAL DIAMETER0.875 INCHES BOTH ENDS IN
TEETH QUANTITY22
BODY STYLEWEBBED, SOLID
TOOTH DIRECTIONRIGHT
BORE STYLEW/ KEYWAY BOTH ENDS
TEETH TYPESINGLE HELIX
STYLE DESIGNATORFLUSH HUB
SUBSTITUTES & CROSS-REFERENCES 2
120-324Reference document
Same NSN cross-reference
Reference document — Secondary reference
120A324Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12081B?
12081B is a GEAR,HELICAL.
What parts can replace 12081B?
There are 2 known substitutes for 12081B: 120-324, 120A324. Substitute compatibility should be verified for your specific system.
What is the NSN for 12081B?
12081B is cataloged in the U.S. Government catalog under NSN 3020-00-249-9909. 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.