NSN 1240-00-989-3555
Part Details | OPTICAL ELEMENT CELL
1240-00-989-3555 A cylindrical item specifically designed to hold a lens, reticle, or window in an optical system. Includes eccentric cells and/or rings designed to be rotated within the instrument to shift an optical element to a prescribed position.
Alternate Parts: 8619883, 8619883, 1240-00-989-3555, 00-989-3555, 1240009893555, 009893555
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 01, 1962 | 00-989-3555 | 21859 ( CELL, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-989-3555
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8619883 | 11934 | SEILER INSTRUMENT AND MANUFACTURINGCOMPANY, INCORPORATED |
| 8619883 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-989-3555
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2024 |
| THREAD LOCATION | INTERNAL AND INTERNAL |
| THREAD SIZE | A1-23/32 - 32$$A1-21/32 - 32 |
| SCREW THREAD SERIES DESIGNATOR | UNS AND UNS |
| THREAD CLASS | A3A$$A2B |
| THREAD LENGTH | 0.250 INCHES AND 0.086 INCHES |
| ECCENTRIC CONSTRUCTION | NOT PROVIDED |
| CHAMFER LOCATION | LARGER DIAMETER END |
| CHAMFER SIZE | 0.038 IN. BY 30 DEG |
| OVERALL LENGTH | 1.884 INCHES NOMINAL |
| OVERALL DIAMETER | 1.815 INCHES NOMINAL |
| FSC APPLICATION DATA | PERISCOPE,XM36 |
