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National Stock Number:
1240-00-864-0352
Federal Supply Class:
1240
National Item Identification Number:
008640352
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:
| 8615899 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| STYLE DESIGNATOR | RECESSED | | HOLE DIAMETER | 1.550 INCHES MINIMUM AND | | 1.560 INCHES MAXIMUM | | OVERALL LENGTH | 2.000 INCHES NOMINAL | | RECESS DIAMETER | 1.880 INCHES MINIMUM AND | | 1.890 INCHES MAXIMUM | | RECESS DEPTH | 1.440 INCHES NOMINAL | | THREAD SIZE | 1.812 IN.-32 NS-2 | | COUNTERBORE TAPER ANGLE IN DEG | 30.0 | | HOLE CHAMFER ANGLE IN DEG | 45.0 | | HOLE CHAMFER DIAMETER | 1.770 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 2024 | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-785, T3, TYPE 1-CANCELED FED SPEC SINGLE MATERIAL RESPONSE | | SURFACE TREATMENT | ANODIZE | | DRIVE TYPE | SLOTTED | | HOLE OR SLOT QUANTITY | 2 | | WIDTH | 0.057 INCHES NOMINAL | | DEPTH | 0.057 INCHES NOMINAL | | DRIVE FACILITY ANGULAR SPACING IN DEG | 180.0 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | GUIDE DESIGN | THREAD RELIEF | | GUIDE LOCATION | BOTH EDGES | | SETSCREW NOTCH | PROVIDED | | FSC APPLICATION DATA | TELESCOPE,ELBOW,T176 INTEGRATED WITH FIRE CONTROL EQUIPMENT | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 19200 | | DESIGN CONTROL REFERENCE | 8615899 |
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