The Sprocket Wheel, cataloged under National Stock Number 3020-01-352-9178, 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 D & L Thomas Equipment Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-352-9178 |
| Primary Part Number | 50120104 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | D & L Thomas Equipment Corporation |
| Status | ACTIVE |
| Securing Method | DRILLED HOLE |
| Bore Length | 1.630 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Outside Diameter | 4.330 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 12 |
| Protruding Hub Characteristic | PLAIN |
| Securing Hole Quantity | 1 |
| Hole Location | ON HUB |
| Bore Diameter | 1.500 INCHES NOMINAL IN |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.575 INCHES NOMINAL IN |
| Securing Location | AA END |
| 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 |
|---|---|
| 50120104 PRIMARY | D & L Thomas Equipment Corporation (USA) |
| Reference | Meaning |
|---|---|
| 20180 | 5/9 Secondary reference Jimco Supply Co Inc |
NSN 3020-01-352-9178 is a Sprocket Wheel, manufactured by D & L Thomas Equipment Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-352-9178 has 1 manufacturer part number on file: 50120104 (D & L Thomas Equipment Corporation).
4 possible matches (shared part number, not a government interchangeability claim): 5330-01-389-1370, 6510-01-465-8821, 6650-01-491-4406. Verify interchangeability with system specifications before substitution.
Key specifications for 50120104: Securing Method: DRILLED HOLE; Bore Length: 1.630 INCHES NOMINAL IN; Design Form: PLAIN; Outside Diameter: 4.330 INCHES NOMINAL IN. 17 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.