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National Stock Number:
6650-00-464-4617
Federal Supply Class:
6650
National Item Identification Number:
004644617
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:
| 10188998 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 10188998 | 54297 | NUMBER INC |
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Techincal Specification:
| STYLE DESIGNATOR | RECESSED | | HOLE DIAMETER | 3.030 INCHES MINIMUM AND | | 3.035 INCHES MAXIMUM | | OVERALL LENGTH | 0.265 INCHES NOMINAL | | RECESS DIAMETER | 3.210 INCHES MINIMUM AND | | 3.215 INCHES MAXIMUM | | RECESS DEPTH | 0.170 INCHES NOMINAL | | THREAD SIZE | 3.240 IN.-28 UNS-2A | | COUNTERBORE TAPER ANGLE IN DEG | 45.0 | | HOLE CHAMFER ANGLE IN DEG | 60.0 | | HOLE CHAMFER DIAMETER | 3.189 INCHES MINIMUM AND | | 3.194 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY, ASTM B241, T6 | | DRIVE TYPE | SLOTTED | | HOLE OR SLOT QUANTITY | 2 | | WIDTH | 0.060 INCHES NOMINAL | | DEPTH | 0.125 INCHES NOMINAL | | DRIVE FACILITY ANGULAR SPACING IN DEG | 180.0 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE | | SETSCREW NOTCH | NOT PROVIDED | | FSC APPLICATION DATA | LAUNCHER,TUBULAR,GUIDED MISSILE | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 18876 | | DESIGN CONTROL REFERENCE | 10188998 |
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