The Gear,helical, cataloged under National Stock Number 3020-01-077-2229, 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 Cummins Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-077-2229 |
| Primary Part Number | 215965 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Keyway Nominal Width | 0.377 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 3.756 INCHES BOTH ENDS IN |
| Helix Angle | 22.6195 DEGREES |
| Teeth Quantity | 36 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Pitch Diameter | 4.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 5.1520 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.947 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 1.250 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 |
|---|---|
| 215965 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2495 | 5/9 Secondary reference Cloyes Gear and Products Inc |
NSN 3020-01-077-2229 is a Gear,helical, manufactured by Cummins Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-077-2229 has 1 manufacturer part number on file: 215965 (Cummins Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 4320-01-151-9372, 2815-01-331-7353, 6230-01-547-3812. Verify interchangeability with system specifications before substitution.
Key specifications for 215965: Keyway Nominal Width: 0.377 INCHES BOTH ENDS IN; Bore Nominal Diameter: 3.756 INCHES BOTH ENDS IN; Helix Angle: 22.6195 DEGREES; Teeth Quantity: 36. 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.