The Gear,helical, cataloged under National Stock Number 3020-01-317-4710, 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 Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-317-4710 |
| Primary Part Number | 8485963 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.376 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 2.176 INCHES BOTH ENDS IN |
| Teeth Quantity | 17 |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Pitch Diameter | 4.3156 INCHES NOMINAL IN |
| Nominal Outside Diameter | 4.812 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.338 INCHES BOTH ENDS IN |
| Pressure Angle | 28.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 2.740 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 |
|---|---|
| 8485963 PRIMARY | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc (USA) |
| Reference | Meaning |
|---|---|
| 8485963 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
NSN 3020-01-317-4710 is a Gear,helical, manufactured by Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-317-4710 has 1 manufacturer part number on file: 8485963 (Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc).
Key specifications for 8485963: Keyway Nominal Width: 0.376 INCHES BOTH ENDS IN; Bore Nominal Diameter: 2.176 INCHES BOTH ENDS IN; Teeth Quantity: 17; Tooth Direction: RIGHT. 13 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.