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National Stock Number:
5855-01-039-2857
Federal Supply Class:
5855
National Item Identification Number:
010392857
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:
| SM-D-850409 | 34671 | A-I-K INC | | SM-D-850409 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR | | SMD850409 | 2S308 | FREEHOLD MANUFACTURING ASSEMBLY COMPANY, INC. |
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Techincal Specification:
| DRIVE FACILITY ANGULAR SPACING IN DEG | 90.0 | | DRIVE TYPE | DRILLED HOLE | | DIAMETER | 0.062 INCHES NOMINAL | | FLANGE THREAD SIZE | 1.6875 IN.-32 | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | DRIVE EDGE | | HOLE DIAMETER | 1.437 INCHES MINIMUM AND 1.442 INCHES MAXIMUM | | HOLE OR SLOT QUANTITY | 4 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.189 INCHES MINIMUM AND 0.199 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY 6061 | | RADIUS FROM GEOMETRIC AXIS TO HOLE CENTER | 0.765 INCHES MINIMUM AND 0.770 INCHES MAXIMUM | | SETSCREW NOTCH | NOT PROVIDED | | SHOULDER LENGTH | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM | | SHOULDER TAPER ANGLE IN DEG | 20.0 | | STYLE DESIGNATOR | SHOULDERED | | TAPERED SHOULDER MINOR DIAMETER | 1.437 INCHES MINIMUM AND 1.442 INCHES MAXIMUM |
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