The Gear,helical, cataloged under National Stock Number 3020-01-391-0789, 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 Tulsa Winch, Inc.. Government technical data includes 7 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-391-0789 |
| Primary Part Number | 27340 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Tulsa Winch, Inc. |
| Status | ACTIVE |
| Teeth Quantity | 14 |
| Body Style | PLAIN, SOLID |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 1.7500 INCHES NOMINAL IN |
| Material | BRONZE BODY |
| Material | BRONZE SPLINE |
| 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 |
|---|---|
| 27340 PRIMARY | Tulsa Winch, Inc. (USA) |
NSN 3020-01-391-0789 is a Gear,helical, manufactured by Tulsa Winch, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-391-0789 has 1 manufacturer part number on file: 27340 (Tulsa Winch, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5320-01-606-5643. Verify interchangeability with system specifications before substitution.
Key specifications for 27340: Teeth Quantity: 14; Body Style: PLAIN, SOLID; Teeth Type: SINGLE HELIX; Style Designator: PROTRUDING HUB. 7 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.