The Gear,helical, cataloged under National Stock Number 3020-00-908-7280, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-908-7280 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.158 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.251 INCHES BOTH ENDS IN |
| Helix Angle | 15.0000 DEGREES |
| Teeth Quantity | 24 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Pitch Diameter | 2.0706 INCHES NOMINAL IN |
| Tooth Form | SPECIAL |
| Nominal Outside Diameter | 2.295 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.716 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| 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 |
| Reference | Meaning |
|---|---|
| 0410210 | 3/9 Design control — primary reference Perkins Engines Inc |
| 14719 | C/1 Advisory reference — outside the item-of-supply concept Westerbeke Corporation |
| 0410210 | 5/9 Secondary reference Peterborough Canoe Co Ltd |
| 0410210 | 5/9 Secondary reference U.S. Government activity |
| 0410210 | C/1 Advisory reference — outside the item-of-supply concept Westerbeke Corporation |
| 0410210 | 5/9 Secondary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
NSN 3020-00-908-7280 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-370-9699, 6540-01-578-7494, 5995-01-692-3741. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-908-7280: Keyway Nominal Width: 0.158 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.251 INCHES BOTH ENDS IN; Helix Angle: 15.0000 DEGREES; Teeth Quantity: 24. 16 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.