The Filter,light,optical Instrument, cataloged under National Stock Number 1240-00-025-0128, 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 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 1240-00-025-0128 |
| Primary Part Number | 3000028 |
| Item Name | Filter,light,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 |
| Overall Diameter | 32.5 MILLIMETERS NOMINAL MM |
| Overall Thickness | 1.8 MILLIMETERS NOMINAL MM |
| Density Variability | NOT VARIABLE |
| Material | GLASS SURFACE |
| 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 |
|---|---|
| 3000028 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 164102PC5 | C/1 Advisory reference — outside the item-of-supply concept Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 164102PC5 | 5/9 Secondary reference F and H Mfg Corp |
| 3000028 | 5/9 Secondary reference F and H Mfg Corp |
NSN 1240-00-025-0128 is a Filter,light,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 1240-00-025-0128 has 1 manufacturer part number on file: 3000028 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
5 possible matches (shared part number, not a government interchangeability claim): 5305-01-621-6335, 5305-01-684-6111, 5305-01-684-6268. Verify interchangeability with system specifications before substitution.
Key specifications for 3000028: Overall Diameter: 32.5 MILLIMETERS NOMINAL MM; Overall Thickness: 1.8 MILLIMETERS NOMINAL MM; Special Features: YELLOW FILTER; Density Variability: NOT VARIABLE. 4 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 1240-00-025-0128 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.