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1021191 — GEAR,SPUR

✓ Government record, cited
3M · COMPONENT
PRODUCT OVERVIEW

1021191: GEAR,SPUR.

The GEAR,SPUR is a 3M industrial component. Key specifications include special_features: 18 TEETH 6.39:1 RATIO, COMPROMISES GEAR 1021190 & HUB 1017007, end_item_identification: GEAR BOX - TYPE MGX-5321DC, part_name_assigned_by_controlling_agency: PINION ASSY. TWIN DISC INCORPORATED.

This part is cataloged in the U.S. Government catalog under NSN 3020-01-644-0833, 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
1021191
NSN: 3020-01-644-0833
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
special_features18 TEETH 6.39:1 RATIO, COMPROMISES GEAR 1021190 & HUB 1017007
end_item_identificationGEAR BOX - TYPE MGX-5321DC
part_name_assigned_by_controlling_agencyPINION ASSY. TWIN DISC INCORPORATED
NSN3020-01-644-0833
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: 3M GEAR,SPUR TITLE COMPONENT PN 1021191 MFR 3M GEAR,SPUR
TECHNICAL CHARACTERISTICS
SPECIAL FEATURES18 TEETH 6.39:1 RATIO, COMPROMISES GEAR 1021190 & HUB 1017007
PART NAME ASSIGNED BY CONTROLLING AGENCYPINION ASSY. TWIN DISC INCORPORATED
END ITEM IDENTIFICATIONGEAR BOX - TYPE MGX-5321DC
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1021191?
1021191 is a GEAR,SPUR manufactured by 3M.
What is the NSN for 1021191?
1021191 is cataloged in the U.S. Government catalog under NSN 3020-01-644-0833. 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.