The Gear,helical, cataloged under National Stock Number 3020-01-113-4584, 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 Perkins Engines Inc. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-113-4584 |
| Primary Part Number | 31171245 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Perkins Engines Inc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.156 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.250 INCHES BOTH ENDS IN |
| Helix Angle | 22.0000 DEGREES |
| Teeth Quantity | 24 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Tooth Form | STANDARD |
| Features Provided | CASEHARDENED |
| Nominal Outside Diameter | 2.2940 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.782 INCHES BOTH ENDS IN |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.750 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 |
|---|---|
| 31171245 PRIMARY | Perkins Engines Inc (USA) |
NSN 3020-01-113-4584 is a Gear,helical, manufactured by Perkins Engines Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-113-4584 has 1 manufacturer part number on file: 31171245 (Perkins Engines Inc).
Key specifications for 31171245: Keyway Nominal Width: 0.156 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.250 INCHES BOTH ENDS IN; Helix Angle: 22.0000 DEGREES; Teeth Quantity: 24. 15 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.