The Ratchet Wheel, cataloged under National Stock Number 3020-01-154-2129, 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 Dutton-Lainson Company. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-154-2129 |
| Primary Part Number | 404164 |
| Item Name | Ratchet Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Dutton-Lainson Company |
| Status | ACTIVE |
| Teeth Quantity | 15 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-01-154-2129 is a Ratchet Wheel, manufactured by Dutton-Lainson Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-154-2129 has 2 manufacturer part numbers on file: 2AA620 (Oshkosh Defense Llc), 404164 (Dutton-Lainson Company).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-183-4228. Verify interchangeability with system specifications before substitution.
Key specifications for 404164: Teeth Quantity: 15; Special Features: MATERIAL COPPER,BRAZED; End Item Identification: 2320-01-097-0260; W/S TRUCK HEAVY EXPANDED MILITARY TACTICAL (HEMTT). 1 specification is 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.