The Telescope,straight, cataloged under National Stock Number 1240-01-643-4580, is classified within Federal Supply Class 1240 (No Item Name Available) of the Fire Control Equipment group. The primary manufacturer of record is Sightron Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-643-4580 |
| Primary Part Number | 25139 |
| Item Name | Telescope,straight |
| FSC / FSG | 1240 / 12 — No Item Name Available |
| Manufacturer | Sightron Inc |
| Status | ACTIVE |
| Objective Aperture Diameter | 60.0 MILLIMETERS NOMINAL MM |
| Straight Type Overall Length | 16.9 INCHES NOMINAL IN |
| Magnification Type | VARIABLE |
| Scale Markings | NOT PROVIDED |
| Reticle Style Designator | CROSSLINE |
| Magnification | 10.0 MINIMUM AND 50.0 MAXIMUM |
| Carrying Case | NOT PROVIDED |
| Focusing Type | ADJUSTABLE |
| Optical Device Type | LENS |
| Bracket | NOT PROVIDED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 25139 PRIMARY | Sightron Inc (USA) |
NSN 1240-01-643-4580 is a Telescope,straight, manufactured by Sightron Inc, classified under FSC 1240 (No Item Name Available). Status: active.
NSN 1240-01-643-4580 has 1 cross-referenced part number: 25139 (Sightron Inc).
There are 6 known substitutes for 1240-01-643-4580: 5977-00-096-2917, 5330-00-640-9398, 4710-01-012-6711 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 25139: Objective Aperture Diameter: 60.0 MILLIMETERS NOMINAL MM; Straight Type Overall Length: 16.9 INCHES NOMINAL IN; Magnification Type: VARIABLE; Scale Markings: NOT PROVIDED. 11 total characteristics are documented in the Federal Logistics Information System.