The Ratchet,arm, cataloged under National Stock Number 5120-01-541-7477, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Lowell Corporation Dba Lowell Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5120-01-541-7477 |
| Primary Part Number | 21901 |
| Item Name | Ratchet,arm |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Lowell Corporation Dba Lowell Corp |
| Status | ACTIVE |
| General Characteristics Item Description | RATCHET ARM 0.500 HEX |
| 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 |
|---|---|
| 21901 | Lowell Corporation Dba Lowell Corp (USA) |
| Reference | Meaning |
|---|---|
| ERMC04683 FIND 3 | 3/2 Design control — primary reference U.S. Government activity |
| 21901 | 5/2 Secondary reference U.S. Government activity |
NSN 5120-01-541-7477 is a Ratchet,arm, manufactured by Lowell Corporation Dba Lowell Corp, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-541-7477 has 1 manufacturer part number on file: 21901 (Lowell Corporation Dba Lowell Corp).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-716-9652. Verify interchangeability with system specifications before substitution.
Key specifications for 21901: General Characteristics Item Description: RATCHET ARM 0.500 HEX. 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.