The Gear,spur, cataloged under National Stock Number 3020-00-080-6958, 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 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-080-6958 |
| Primary Part Number | 6773478 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.375 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.950 INCHES BOTH ENDS IN |
| Teeth Quantity | 44 |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.625 INCHES BOTH ENDS IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM HUB |
| Hardness Rating | 57.0 ROCKWELL C MAXIMUM TEETH |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 11.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 18 BOTH ENDS |
| Nominal Outside Diameter | 11.490 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 5150 OVERALL |
| Spline Pitch Diameter | 2.2500 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.120 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 3020-00-080-6958 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 3020-00-080-6958 has 2 manufacturer part numbers on file: 6773478 (Allison Transmission Inc Dba Allison Transmission, Inc), D47487 (Cnh Industrial America Llc Dba Cnh America).
Key specifications for 6773478: Bore Nominal Diameter: 2.375 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.950 INCHES BOTH ENDS IN; Teeth Quantity: 44; Body Style: WEBBED, WITH LIGHTENING HOLES. 18 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.