The Gear,helical, cataloged under National Stock Number 3020-01-237-8147, 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 B.t.m.c. Corporation. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Gear,helical |
| FSC / FSG | 3020 — Gears, Pulleys, Sprockets, and Transmission Chain (FSG 30) |
| Manufacturers | B.t.m.c. Corporation (CAGE 7S526); Wheeler Fleet Solutions, Co. (CAGE 55683) |
| Parameter | Value |
|---|---|
| NSN | 3020-01-237-8147 |
| Primary Part Number | 6.990.0.371.001.4 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | B.t.m.c. Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 6.990.0.371.001.4 | B.t.m.c. Corporation (USA) |
| 6.990.0.371.001.4 | Wheeler Fleet Solutions, Co. (USA) |
| Reference | Meaning |
|---|---|
| 6.990.0.371.001.4 | 3/9 Design control — primary reference Mwm-Murphy Diesel Co |
NSN 3020-01-237-8147 is a Gear,helical, manufactured by B.t.m.c. Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-237-8147 has 2 manufacturer part numbers on file: 6.990.0.371.001.4 (B.t.m.c. Corporation), 6.990.0.371.001.4 (Wheeler Fleet Solutions, Co.).
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.