The Gear,helical, cataloged under National Stock Number 3020-01-126-9090, 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 Illinois Tool Works Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Gear,helical |
| FSC / FSG | 3020 — Gears, Pulleys, Sprockets, and Transmission Chain (FSG 30) |
| Manufacturers | Illinois Tool Works Inc (CAGE 30323); Itw Heartland Components Inc (CAGE 9U023) |
| Parameter | Value |
|---|---|
| NSN | 3020-01-126-9090 |
| Primary Part Number | 8-52T-145 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Illinois Tool Works Inc |
| 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 |
|---|---|
| 8-52T-145 PRIMARY | Illinois Tool Works Inc (USA) |
| 8-52T-145 | Itw Heartland Components Inc (USA) |
| Reference | Meaning |
|---|---|
| 8-52T-145 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
| 8-52T-01 | D/9 Drawing number reference only Illinois Tool Wks Inc Linac Div |
| 8-52T-01 ITEM 44 | 5/9 Secondary reference Illinois Tool Wks Inc Linac Div |
| 8-52T-01 ITEM 44 | 5/9 Secondary reference Itw Heartland Components Inc |
NSN 3020-01-126-9090 is a Gear,helical, manufactured by Illinois Tool Works Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-126-9090 has 2 manufacturer part numbers on file: 8-52T-145 (Illinois Tool Works Inc), 8-52T-145 (Itw Heartland Components Inc).
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-126-9937, 3020-01-159-5619. Verify interchangeability with system specifications before substitution.
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.