The Gear,spur, cataloged under National Stock Number 3020-00-741-1880, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-741-1880 |
| Primary Part Number | 7411880 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.700 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.250 INCHES SECOND END IN |
| Teeth Quantity | 24 |
| Body Style | PLAIN, SOLID |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.154 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.759 INCHES FIRST END IN |
| Nominal Overall Length | 1.281 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 3.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Features Provided | CASEHARDENED |
| Hub Style Designator | PLAIN SECOND END |
| Hub Style Designator | 1 GROOVE FIRST END |
| Spline Quantity | 12 BOTH ENDS |
| Nominal Outside Diameter | 3.081 INCHES IN |
| Nominal Distance From End to First Groove | 0.380 INCHES FIRST END IN |
| End Nominal Diameter | 2.812 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| First Groove Nominal Diameter | 2.250 INCHES FIRST END IN |
| First Groove Nominal Width | 0.379 INCHES FIRST END IN |
| Face Nominal Width | 0.368 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-00-741-1880 is a Gear,spur, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-741-1880 has 2 manufacturer part numbers on file: 38529 (New Venture Gear Inc New Process Gear Div), 7411880 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 6680-01-098-9690, 5360-01-157-2091, 5340-01-593-3528. Verify interchangeability with system specifications before substitution.
Key specifications for 7411880: Bore Nominal Diameter: 1.700 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.250 INCHES SECOND END IN; Teeth Quantity: 24; Body Style: PLAIN, SOLID. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.