The Gear,spur, cataloged under National Stock Number 3020-01-149-1239, 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 Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-149-1239 |
| Primary Part Number | 6883999 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Teeth Quantity | 71 |
| Body Style | PLAIN, SOLID |
| Style Designator | HUBLESS |
| Pitch Diameter | 8.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Features Provided | CASEHARDENED |
| Nominal Outside Diameter | 9.000 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Face Nominal Width | 2.250 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 |
| Part Number | Manufacturer |
|---|---|
| 6883999 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 6883999 | The W.w. Williams Company, Llc Dba the W.w. Williams Co, Llc (USA) |
| Reference | Meaning |
|---|---|
| 6883999 | 5/9 Secondary reference Detroit Diesel (overseas Distribution Corp) |
NSN 3020-01-149-1239 is a Gear,spur, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-149-1239 has 2 manufacturer part numbers on file: 6883999 (Allison Transmission Inc Dba Allison Transmission, Inc), 6883999 (The W.w. Williams Company, Llc Dba the W.w. Williams Co, Llc).
Key specifications for 6883999: Teeth Quantity: 71; Body Style: PLAIN, SOLID; Style Designator: HUBLESS; Pitch Diameter: 8.8750 INCHES NOMINAL IN. 9 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.