The Window,optical Instrument, cataloged under National Stock Number 6650-00-028-2218, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-00-028-2218 |
| Item Name | Window,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Status | ACTIVE |
| FSC Application Data | SEXTANT,BUBBLE |
| Length | 42.000 MILLIMETERS NOMINAL MM |
| Bevel Depth | 2.000 MILLIMETERS NOMINAL MM |
| Material Document and Classification | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Reflection Reducing Surface | BOTH |
| Polished Periphery | NOT PROVIDED |
| Width | 19.500 MILLIMETERS NOMINAL MM |
| Bevel Angle in Deg | 45.000 NOMINAL |
| Material | GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED |
| Refraction Index | 1.5230 NOMINAL |
| Polished Surface | BOTH |
| Thickness | 2.500 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1045-124B | 3/9 Design control — primary reference U.S. Government activity |
NSN 6650-00-028-2218 is a Window,optical Instrument, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
Key specifications for 6650-00-028-2218: FSC Application Data: SEXTANT,BUBBLE; Length: 42.000 MILLIMETERS NOMINAL MM; Bevel Depth: 2.000 MILLIMETERS NOMINAL MM; Material Document and Classification: JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED. 12 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.
NSN 6650-00-028-2218 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.