NSN 1240-00-864-0352

Part Details | OPTICAL ELEMENT RETAINER

1240-00-864-0352 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.

Alternate Parts: 8615899, 1240-00-864-0352, 00-864-0352, 1240008640352, 008640352

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JAN 01, 196200-864-035222451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES

RECESSED

Cross Reference | NSN 1240-00-864-0352
Part Number Cage Code Manufacturer
861589919200US ARMY ARDEC RDECOM
Technical Data | NSN 1240-00-864-0352
Characteristic Specifications
STYLE DESIGNATOR RECESSED
HOLE DIAMETER1.550 INCHES MINIMUM AND 1.560 INCHES MAXIMUM
OVERALL LENGTH2.000 INCHES NOMINAL
RECESS DIAMETER1.880 INCHES MINIMUM AND 1.890 INCHES MAXIMUM
RECESS DEPTH1.440 INCHES NOMINAL
THREAD SIZE1.812 IN.-32 NS-2
COUNTERBORE TAPER ANGLE IN DEG30.0
HOLE CHAMFER ANGLE IN DEG45.0
HOLE CHAMFER DIAMETER1.770 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T-785, T3, TYPE 1-CANCELED FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL ALUMINUM ALLOY 2024
SURFACE TREATMENT ANODIZE
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY2
WIDTH0.057 INCHES NOMINAL
DEPTH0.057 INCHES NOMINAL
DRIVE FACILITY ANGULAR SPACING IN DEG180.0
INTERNAL ANNULAR SERRATION NOT PROVIDED
GUIDE DESIGN THREAD RELIEF
GUIDE LOCATION BOTH EDGES
SETSCREW NOTCH PROVIDED
FSC APPLICATION DATATELESCOPE,ELBOW,T176 INTEGRATED WITH FIRE CONTROL EQUIPMENT