The Square,surface Plate, cataloged under National Stock Number 5220-00-121-4842, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5220-00-121-4842 |
| Item Name | Square,surface Plate |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 86816 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5220-00-121-4842 is a Square,surface Plate, classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5815-00-127-2184, 2930-00-592-3439, 4310-01-318-7958. Verify interchangeability with system specifications before substitution.
Key specifications for 5220-00-121-4842: Special Features: PLATE,SURFACE,ASSY. 0 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.