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National Stock Number:
1240-00-121-0797
Federal Supply Class:
1240
National Item Identification Number:
001210797
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:
| 8289250 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| DRIVE FACILITY ANGULAR SPACING IN DEG | 180.0 | | DRIVE TYPE | SLOTTED | | DEPTH | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM | | FSC APPLICATION DATA | PERISCOPE,TANK M32,M32C | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE DIAMETER | 1.450 INCHES MINIMUM AND 1.460 INCHES MAXIMUM | | HOLE OR SLOT QUANTITY | 2 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700/3 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 1ST MATERIAL RESPONSE OR MIL-C-11866, COMP 3, T6 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-225/8 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-250/11, T6 FED SPEC 3RD MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 355.0 OR ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 | | RECESS ANGLE IN DEG | 90.0 | | RECESS DEPTH | 0.070 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | WIDTH | 0.062 INCHES MINIMUM AND 0.078 INCHES MAXIMUM | | STYLE DESIGNATOR | RECESSED | | SURFACE TREATMENT | ANODIZE | | THREAD SIZE | 1.688 IN.-32UNS-2A |
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