The Telescope,straight, cataloged under National Stock Number 1240-00-381-5886, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 1240-00-381-5886 |
| Primary Part Number | 684045 |
| Item Name | Telescope,straight |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Magnification | 2.5X NOMINAL |
| Magnification Type | FIXED |
| Optical Device Type | LENS |
| Focusing Type | FIXED |
| Reticle Style Designator | CROSSLINE |
| Bracket | PROVIDED |
| Carrying Case | NOT PROVIDED |
| Objective Aperture Diameter | 1.0 INCHES NOMINAL IN |
| Scale Markings | PROVIDED |
| Straight Type Overall Length | 10.312 INCHES NOMINAL IN |
| 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 |
|---|---|
| 245829 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 684045 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| K2.55 | 5/9 Secondary reference Weaver W R Co Div of Olin Corp |
NSN 1240-00-381-5886 is a Telescope,straight, 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 1240-00-381-5886 has 2 manufacturer part numbers on file: 245829 (Lockheed Martin Corporation Div Rms - Mitchel Field), 684045 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
3 possible matches (shared part number, not a government interchangeability claim): 5905-01-107-7123, 5330-01-132-8352, 4820-01-532-0391. Verify interchangeability with system specifications before substitution.
Key specifications for 684045: Magnification: 2.5X NOMINAL; Magnification Type: FIXED; Optical Device Type: LENS; Focusing Type: FIXED. 10 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 1240-00-381-5886 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.