The Gear,spur, cataloged under National Stock Number 3020-00-770-7472, 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 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-770-7472 |
| Primary Part Number | 7707472 |
| 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 | 0.676 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.000 INCHES FIRST END IN |
| Teeth Quantity | 41 |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.094 INCHES FIRST END IN |
| Hardness Rating | 90.0 ROCKWELL SUPERFICIAL 15-N MINIMUM OVERALL |
| Nominal Overall Length | 0.312 INCHES IN |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Material Document and Classification | MIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.1000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Spline Quantity | 20 BOTH ENDS |
| Nominal Outside Diameter | 4.225 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 8620H OVERALL |
| Spline Pitch Diameter | 0.6250 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.218 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 3020-00-770-7472 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 3020-00-770-7472 has 3 manufacturer part numbers on file: 6765309 (Allison Transmission Inc Dba Allison Transmission, Inc), 7707472 (U S Army Tank Automotive Command Amsta-Im-Mm), 6765309 (General Motors Corp).
Key specifications for 7707472: Bore Nominal Diameter: 0.676 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.000 INCHES FIRST END IN; Teeth Quantity: 41; Body Style: WEBBED, OFFSET, SOLID. 19 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.