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National Stock Number:
1240-00-291-3570
Federal Supply Class:
1240
National Item Identification Number:
002913570
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:
| 7583446 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| COUNTERBORE TAPER ANGLE IN DEG | 60.0 | | DEPTH | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM | | DRIVE TYPE | SLOTTED | | FSC APPLICATION DATA | TELESCOPE,STRAIGHT M86F | | HOLE DIAMETER | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM | | HOLE OR SLOT QUANTITY | 2 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-354, COND T-CANCELED FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 | | RECESS DEPTH | 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM | | RECESS DIAMETER | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | OVERALL LENGTH | 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM | | SETSCREW NOTCH | PROVIDED | | STYLE DESIGNATOR | RECESSED | | SURFACE TREATMENT | ANODIZE | | THREAD SIZE | 0.648 IN.-48NS-3A | | WIDTH | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM |
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