The Block,step,machinists', cataloged under National Stock Number 5220-01-627-4746, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5220-01-627-4746 |
| Item Name | Block,step,machinists' |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Status | ACTIVE |
| Length | 1.747 INCHES NOMINAL IN |
| Design Type | PLAIN |
| Surface Finish | GROUND |
| Supplementary Features | HEIGHT RANGE 1-1/8" TO 2-1/2" |
| Specification/standard Data | ASME Y14.100-2004 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND ASME Y14.5-2009 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Height | 1.0 INCHES NOMINAL IN |
| Block Quantity Per Set | 2 |
| Width | 1.068 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Hardening Feature | INCLUDED |
| 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 |
|---|---|
| 11B5190530-2 | 7/2 Vendor item drawing reference Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army |
| CL-20-BS | 3/2 Design control — primary reference U.S. Government activity |
NSN 5220-01-627-4746 is a Block,step,machinists', classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
Key specifications for 5220-01-627-4746: Length: 1.747 INCHES NOMINAL IN; Design Type: PLAIN; Surface Finish: GROUND; Supplementary Features: HEIGHT RANGE 1-1/8" TO 2-1/2". 10 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.