|
|
|
National Stock Number:
1240-01-320-1691
Federal Supply Class:
1240
National Item Identification Number:
013201691
Description:
RETAINER,OPTICAL ELEMENT
Detail:
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.
|
Manufacturer Information:
| 13077320-501 | 04939 | LOCKHEED MARTIN CORPORATION | | 13077320-501 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
|
Techincal Specification:
| GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE CHAMFER ANGLE IN DEG | 41.0 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | PLASTIC | | RECESS DEPTH | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM | | OVERALL LENGTH | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 1.980 IN.-32 |
|
|