The Reverse Reading Blo, cataloged under National Stock Number 5210-01-471-3671, is classified within Federal Supply Class 5210 (Measuring Tools, Craftsmen's) of the Measuring Tools group. The manufacturer of record is L.s. Starrett Company (the) Div Tool Division. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5210-01-471-3671 |
| Primary Part Number | 258RRB EDPNO:56014 |
| Item Name | Reverse Reading Blo |
| FSC / FSG | 5210 / 52 — Measuring Tools, Craftsmen's |
| Manufacturer | L.s. Starrett Company (the) Div Tool Division |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 258RRB EDPNO:56014 PRIMARY | L.s. Starrett Company (the) Div Tool Division (USA) |
| Reference | Meaning |
|---|---|
| 258RRB EDPNO:56104 | 5/9 Secondary reference L.s. Starrett Company (the) Div Tool Division |
NSN 5210-01-471-3671 is a Reverse Reading Blo, manufactured by L.s. Starrett Company (the) Div Tool Division, classified under FSC 5210, Measuring Tools, Craftsmen's. Status: active.
NSN 5210-01-471-3671 has 1 manufacturer part number on file: 258RRB EDPNO:56014 (L.s. Starrett Company (the) Div Tool Division).
Key specifications for 258RRB EDPNO:56014: Special Features: IS USED ON DIGI-CHEK HEIGHT GAGES FOR THE PRECISE CALIBRATION OF WORKING CAGES AND FOR SETTING DIAL BORE GAGES; THE BLOCK FITS IN ALTERNATE INCH POSITIONS; ITS TONGUE ENTERING THE ODD NUMBERS AND ITS GROOVE ENTERING THE EVEN NUMBERS OF THE CAGE BLOCK STACK; FITS 12", 18" AND 24" GAGES; PACKED ONE IN A BOX; GAGING SIZE: INCH. 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.