The T-Square, cataloged under National Stock Number 6675-00-174-0517, is classified within Federal Supply Class 6675 (Drafting, Surveying, and Mapping Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 6675-00-174-0517 |
| Item Name | T-Square |
| FSC / FSG | 6675 / 66 — Drafting, Surveying, and Mapping Instruments |
| Status | ACTIVE |
| Head Type | FIXED |
| Head Overall Length | 10.000 INCHES MINIMUM IN |
| Material | STEEL CORROSION RESISTING BLADE |
| Material | ALUMINUM OR MAGNESIUM OR ZINC HEAD |
| Blade Overall Length | 18.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-T-10629 | 5/9 Secondary reference U.S. Government activity |
| A-A-50227 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| MIL-T-10629 TY1 | 5/9 Secondary reference U.S. Government activity |
NSN 6675-00-174-0517 is a T-Square, classified under FSC 6675, Drafting, Surveying, and Mapping Instruments. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 6675-00-190-5273, 6675-00-190-5274, 6675-00-641-3565. Verify interchangeability with system specifications before substitution.
Key specifications for 6675-00-174-0517: Head Type: FIXED; Head Overall Length: 10.000 INCHES MINIMUM IN; Material: STEEL CORROSION RESISTING BLADE; Material: ALUMINUM OR MAGNESIUM OR ZINC HEAD. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.