The Optical Flat, cataloged under National Stock Number 5210-00-540-2183, is classified within Federal Supply Class 5210 (Measuring Tools, Craftsmen's) of the Measuring Tools group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 6 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5210-00-540-2183 |
| Primary Part Number | 7902794 |
| Item Name | Optical Flat |
| FSC / FSG | 5210 / 52 — Measuring Tools, Craftsmen's |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Design Type | REFERENCE DOUBLE |
| Diameter | 3.000 INCHES NOMINAL IN |
| Working Surface Flatness Accuracy | 0.00000100 INCHES NOMINAL IN |
| Material | QUARTZ |
| Thickness | 0.688 INCHES NOMINAL IN |
| Case | PROVIDED |
| 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 |
|---|---|
| 7902794 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 7902794 | 5/1 Secondary reference Van Keuren |
NSN 5210-00-540-2183 is a Optical Flat, manufactured by Us Army Aviation and Missile Command, classified under FSC 5210, Measuring Tools, Craftsmen's. Status: active.
NSN 5210-00-540-2183 has 1 manufacturer part number on file: 7902794 (Us Army Aviation and Missile Command).
Key specifications for 7902794: Design Type: REFERENCE DOUBLE; Diameter: 3.000 INCHES NOMINAL IN; Working Surface Flatness Accuracy: 0.00000100 INCHES NOMINAL IN; Material: QUARTZ. 6 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.