PartsTable
Technical Data Sheet
Download PDF

177921PC12 — GEAR,SPUR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

177921PC12: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN FIRST END, pitch_diameter: 2.2500 INCHES NOMINAL IN, pressure_angle: 14.5000 DEGREES, teeth_quantity: 54. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-177-0730, 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
177921PC12
NSN: 3020-00-177-0730
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN FIRST END
pitch_diameter2.2500 INCHES NOMINAL IN
pressure_angle14.5000 DEGREES
teeth_quantity54
style_designatorPROTRUDING HUB
face_nominal_width0.100 INCHES IN
hub_nominal_diameter1.750 INCHES FIRST END IN
hub_style_designatorPLAIN FIRST END
bore_nominal_diameter0.500 INCHES BOTH ENDS IN
nominal_outside_diameter2.332 INCHES IN
NSN3020-00-177-0730
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,SPUR TITLE COMPONENT PN 177921PC12 MFR GEAR,SPUR
KEY FEATURES
•
BORE NOMINAL DIAMETER: 0.500 INCHES BOTH ENDS IN
•
HUB NOMINAL DIAMETER: 1.750 INCHES FIRST END IN
•
TEETH QUANTITY: 54
•
BODY STYLE: PLAIN, SOLID
•
BORE STYLE: PLAIN FIRST END
•
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: 0.080 INCHES FIRST END IN
•
STYLE DESIGNATOR: PROTRUDING HUB
•
PITCH DIAMETER: 2.2500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
BORE NOMINAL DIAMETER0.500 INCHES BOTH ENDS IN
HUB NOMINAL DIAMETER1.750 INCHES FIRST END IN
TEETH QUANTITY54
BODY STYLEPLAIN, SOLID
BORE STYLEPLAIN FIRST END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.080 INCHES FIRST END IN
STYLE DESIGNATORPROTRUDING HUB
PITCH DIAMETER2.2500 INCHES NOMINAL IN
HUB STYLE DESIGNATORPLAIN FIRST END
NOMINAL OUTSIDE DIAMETER2.332 INCHES IN
OTHER ITEMS IN FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091 3020-00-001-0027 3020-00-001-0028 3020-00-001-0063 3020-00-001-0064 3020-00-001-0066 3020-00-001-0071 3020-00-001-0072
SUBSTITUTES & CROSS-REFERENCES 1
177921Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
Ready to buy 177921PC12?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 177921PC12?
177921PC12 is a GEAR,SPUR.
What parts can replace 177921PC12?
There is 1 known substitute for 177921PC12: 177921. Substitute compatibility should be verified for your specific system.
What is the NSN for 177921PC12?
177921PC12 is cataloged in the U.S. Government catalog under NSN 3020-00-177-0730. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 177921PC12

✓ 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.