The Square Master, cataloged under National Stock Number 5210-01-334-2103, is classified within Federal Supply Class 5210 (Measuring Tools, Craftsmen's) of the Measuring Tools group. The manufacturer of record is Coorstek Inc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5210-01-334-2103 |
| Primary Part Number | 2049-55 |
| Item Name | Square Master |
| FSC / FSG | 5210 / 52 — Measuring Tools, Craftsmen's |
| Manufacturer | Coorstek Inc |
| Status | ACTIVE |
| General Characteristics Item Description | SIZE 3X18X24,LAPPED SURFACES 5,GRADE AA,WEIGHT 120 LBS.,THE SIXTH SIDE IS BACK RELIEVED TO ACHIEVE MINIMUM WEIGHT,SQUARES COME WITH CERTIFICATE OF ACCURACY TRACEABLE TO NBS LBS |
| 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 |
|---|---|
| 2049-55 PRIMARY | Coorstek Inc (USA) |
NSN 5210-01-334-2103 is a Square Master, manufactured by Coorstek Inc, classified under FSC 5210, Measuring Tools, Craftsmen's. Status: active.
NSN 5210-01-334-2103 has 1 manufacturer part number on file: 2049-55 (Coorstek Inc).
Key specifications for 2049-55: General Characteristics Item Description: SIZE 3X18X24,LAPPED SURFACES 5,GRADE AA,WEIGHT 120 LBS.,THE SIXTH SIDE IS BACK RELIEVED TO ACHIEVE MINIMUM WEIGHT,SQUARES COME WITH CERTIFICATE OF ACCURACY TRACEABLE TO NBS LBS. 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.