The Gear,spur, cataloged under National Stock Number 3020-00-770-7494, 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 General Motors Corp. Government technical data includes 27 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-770-7494 |
| Primary Part Number | 6765331 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.904 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.531 INCHES SECOND END IN |
| Teeth Quantity | 36 |
| Body Style | WEBBED, SOLID |
| Counterbore Nominal Diameter | 2.067 INCHES SECOND END IN |
| Bore Style | W/COUNTERBORE SECOND END |
| Bore Style | INVOLUTE SPLINE FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.875 INCHES FIRST END IN |
| First Step Nominal Length | 0.188 INCHES FIRST END IN |
| Hardness Rating | 60.0 ROCKWELL C MINIMUM OVERALL |
| Nominal Overall Length | 2.000 INCHES IN |
| Style Designator | ONE PROTRUDING HUB, ONE FLUSH HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 2.500 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Spline Quantity | 29 BOTH ENDS |
| End Nominal Length | 0.687 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.745 INCHES IN |
| End Nominal Diameter | 2.165 INCHES FIRST END IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 8620 OVERALL |
| Counterbore Nominal Depth | 0.335 INCHES SECOND END IN |
| Spline Pitch Diameter | 1.8125 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.125 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 3020-00-770-7494 is a Gear,spur, manufactured by General Motors Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-770-7494 has 2 manufacturer part numbers on file: 7707494 (U S Army Tank Automotive Command Amsta-Im-Mm), 6765331 (General Motors Corp).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-052-1101. Verify interchangeability with system specifications before substitution.
Key specifications for 6765331: Bore Nominal Diameter: 1.904 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.531 INCHES SECOND END IN; Teeth Quantity: 36; Body Style: WEBBED, SOLID. 27 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.