The Gear,spur, cataloged under National Stock Number 3020-01-073-4256, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-073-4256 |
| Primary Part Number | 12267217 |
| 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 |
| Teeth Quantity | 30 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Nominal Distance Between Body Face and Protruding Hub End | 1.650 INCHES BETWEEN BODY AND FLANGE IN |
| Style Designator | CONE SHAPE BODY, PROTRUDING HUB |
| Pitch Diameter | 9.0630 INCHES NOMINAL IN |
| Nominal Outside Diameter | 10.562 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 4140H OVERALL |
| Body Recess Nominal Depth | 0.950 INCHES BETWEEN BODY AND FLANGE IN |
| Face Nominal Width | 0.250 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12267217 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12267217 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| DAX11552 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 3020-01-073-4256 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 3020-01-073-4256 has 2 manufacturer part numbers on file: 12267217 (U S Army Tank Automotive Command Amsta-Im-Mm), 12267217 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 12267217: Teeth Quantity: 30; Body Style: PLAIN, WITH LIGHTENING HOLES; Nominal Distance Between Body Face and Protruding Hub End: 1.650 INCHES BETWEEN BODY AND FLANGE IN; Style Designator: CONE SHAPE BODY, PROTRUDING HUB. 10 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.
NSN 3020-01-073-4256 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.