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National Stock Number:
1240-01-174-5570
Federal Supply Class:
1240
National Item Identification Number:
011745570
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:
| 11733433 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| CUBIC MEASURE | 2.32459 CUBIC INCHES | | GUIDE DESIGN | THREAD CHAMFER | | HOLE DIAMETER | 1.375 INCHES NOMINAL | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6, ALLOY 2024, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/3, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8, 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 | | SPECIAL FEATURES | ANODIZED SURFACE TREATMENT IS DYED BLACK | | RECESS DEPTH | 0.430 INCHES NOMINAL | | RECESS DIAMETER | 1.870 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | SURFACE TREATMENT | ANODIZE | | THREAD SIZE | AA2.1562 | | USAGE DESIGN | PERISCOPE ASSEMBLY |
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