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National Stock Number:
1240-00-443-1021
Federal Supply Class:
1240
National Item Identification Number:
004431021
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.
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Manufacturer Information:
| 10539351 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| DEPTH | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM | | DIAMETER | 0.094 INCHES NOMINAL | | DRIVE FACILITY ANGULAR SPACING IN DEG | 90.0 | | DRIVE TYPE | DRILLED HOLE | | FSC APPLICATION DATA | PERISCOPE,TANK M50 | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE DIAMETER | 1.620 INCHES MINIMUM AND 1.630 INCHES MAXIMUM | | HOLE OR SLOT QUANTITY | 4 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 6061 | | OVERALL LENGTH | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM | | RADIUS FROM GEOMETRIC AXIS TO HOLE CENTER | 0.906 INCHES NOMINAL | | RECESS ANGLE IN DEG | 90.0 | | RECESS DEPTH | 0.062 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 2.000 IN.-32NS-2A |
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