The Window,optical Instrument, cataloged under National Stock Number 1240-00-025-0185, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-00-025-0185 |
| Primary Part Number | 220588PC10 |
| Item Name | Window,optical Instrument |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| FSC Application Data | RANGEFINDER,FIRE CONTROL |
| Diameter | 22.000 MILLIMETERS NOMINAL MM |
| Polished Periphery | NOT PROVIDED |
| Material | GLASS LOCATION NOT OTHERWISE SPECIFIED |
| Refraction Index | 1.5230 NOMINAL |
| Polished Surface | BOTH |
| Thickness | 4.000 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 220588PC10 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| G8840PC10 | Brunson Instrument Company Dba Brunson Instrument Company (USA) |
NSN 1240-00-025-0185 is a Window,optical Instrument, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-00-025-0185 has 2 manufacturer part numbers on file: 220588PC10 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), G8840PC10 (Brunson Instrument Company Dba Brunson Instrument Company).
Key specifications for 220588PC10: FSC Application Data: RANGEFINDER,FIRE CONTROL; Diameter: 22.000 MILLIMETERS NOMINAL MM; Polished Periphery: NOT PROVIDED; Material: GLASS LOCATION NOT OTHERWISE SPECIFIED. 7 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 1240-00-025-0185 has DEMIL Code D. 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.