PartsTable
Technical Data Sheet
Download PDF

101491 — GEAR,SPUR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

101491: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include end_item_identification: CH53 - MH53. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-012-5908, 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
101491
NSN: 3020-00-012-5908
NIINs: 000125908, 016494586
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 10138 — ASTRONAUTICS CORPORATION OF AMERICA (USA)
SPECIFICATIONS
end_item_identificationCH53 - MH53
NSN3020-00-012-5908
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,SPUR TITLE COMPONENT PN 101491 MFR GEAR,SPUR
KEY FEATURES
•
BORE NOMINAL DIAMETER: 2.8200 INCHES COUNTERBORE FIRST END IN
•
TEETH QUANTITY: 144
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-STD-171,FINISH NO.5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
•
BODY STYLE: PLAIN, SOLID
•
COUNTERBORE NOMINAL DIAMETER: 0.3260 INCHES COUNTERBORE FIRST END IN
•
FLANGE NOMINAL THICKNESS: 0.035 INCHES IN
•
FLANGE NOMINAL DIAMETER: 3.494 INCHES IN
•
BORE STYLE: W/COUNTERBORE COUNTERBORE FIRST END
TECHNICAL CHARACTERISTICS
BORE NOMINAL DIAMETER2.8200 INCHES COUNTERBORE FIRST END IN
TEETH QUANTITY144
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171,FINISH NO.5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
BODY STYLEPLAIN, SOLID
COUNTERBORE NOMINAL DIAMETER0.3260 INCHES COUNTERBORE FIRST END IN
FLANGE NOMINAL THICKNESS0.035 INCHES IN
FLANGE NOMINAL DIAMETER3.494 INCHES IN
BORE STYLEW/COUNTERBORE COUNTERBORE FIRST END
MOUNTING HOLE TYPE AND QUANTITY4 PLAIN AXIALLY THROUGH FLANGE
MOUNTING HOLE NOMINAL DIAMETER0.023 INCHES AXIALLY THROUGH FLANGE IN
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)Demilitarization required — critical (Q)
Ready to buy 101491?
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 101491?
101491 is a GEAR,SPUR.
What is the NSN for 101491?
101491 is cataloged in the U.S. Government catalog under NSN 3020-00-012-5908. 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 — 101491

✓ 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.