NSN 5855-01-171-2818
Part Details | OPTICAL ELEMENT RETAINER
5855-01-171-2818 A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see CELL, OPTICAL ELEMENT. Excludes RING, EXTERNALLY THREADED.
Alternate Parts: 13074684, 13074684, 5855-01-171-2818, 01-171-2818, 5855011712818, 011712818
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 58 | FEB 04, 1984 | 01-171-2818 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
SHOULDERED
Cross Reference | NSN 5855-01-171-2818
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 13074684 | 04939 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
| 13074684 | 58260 | PROGRAM MANAGER ADVANCED ATTACKHELICOPTER BARCOM AMCPM-AAH |
Technical Data | NSN 5855-01-171-2818
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | SHOULDERED |
| SHOULDER LENGTH | 0.375 INCHES NOMINAL |
| HOLE DIAMETER | 2.950 INCHES NOMINAL |
| OVERALL LENGTH | 0.500 INCHES NOMINAL |
| FLANGE DIAMETER | 3.600 INCHES NOMINAL |
| SHOULDER THREAD SIZE | 3.250 IN.-32 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 630 |
| SURFACE TREATMENT | PASSIVATE |
| DRIVE TYPE | SLOTTED |
| HOLE OR SLOT QUANTITY | 4 |
| WIDTH | 0.060 INCHES NOMINAL |
| DEPTH | 0.060 INCHES NOMINAL |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| SETSCREW NOTCH | NOT PROVIDED |