The Level and Plumb, cataloged under National Stock Number 5210-01-428-5542, is classified within Federal Supply Class 5210 (Measuring Tools, Craftsmen's) of the Measuring Tools group. The manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 4 specifications, 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. 2 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 | 5210-01-428-5542 |
| Primary Part Number | 42-291 |
| Item Name | Level and Plumb |
| FSC / FSG | 5210 / 52 — Measuring Tools, Craftsmen's |
| Manufacturer | The Stanley Works Dba Stanley Proto |
| Status | ACTIVE |
| Vial Arrangement | SINGLE LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | DOUBLE FACE |
| Overall Outside Dimensions | 8 IN. LG IN |
| Material | PLASTIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5210-01-428-5542 is a Level and Plumb, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5210, Measuring Tools, Craftsmen's. Status: active.
NSN 5210-01-428-5542 has 2 manufacturer part numbers on file: 42-291 (The Stanley Works Dba Stanley Proto), 6R123 (W.w. Grainger, Inc. Div Government Sales Division).
2 possible matches (shared part number, not a government interchangeability claim): 5120-01-430-6718, 2590-01-591-9166. Verify interchangeability with system specifications before substitution.
Key specifications for 42-291: Vial Arrangement: SINGLE LOCATION NOT OTHERWISE SPECIFIED; Design Type: DOUBLE FACE; Overall Outside Dimensions: 8 IN. LG IN; Material: PLASTIC. 4 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.