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National Stock Number:
5855-01-171-2817
Federal Supply Class:
5855
National Item Identification Number:
011712817
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:
| 13074744 | 04939 | LOCKHEED MARTIN CORPORATION | | 13074744 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| DRIVE TYPE | SLOTTED | | DEPTH | 0.040 INCHES NOMINAL | | FLANGE DIAMETER | 1.969 INCHES NOMINAL | | HOLE OR SLOT QUANTITY | 4 | | HOLE DIAMETER | 1.720 INCHES NOMINAL | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.300 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 6061 | | SETSCREW NOTCH | NOT PROVIDED | | SHOULDER LENGTH | 0.260 INCHES NOMINAL | | SHOULDER THREAD SIZE | 1.9375 IN.-32 | | WIDTH | 0.040 INCHES NOMINAL | | STYLE DESIGNATOR | SHOULDERED | | SURFACE TREATMENT | ANODIZE |
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