NSN 1240-00-996-3824

Part Details | OPTICAL ELEMENT RETAINER

1240-00-996-3824 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: 8619808, 8619808, 8619808, 8619808, 1240-00-996-3824, 00-996-3824, 1240009963824, 009963824

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12OCT 08, 196500-996-382422451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES

RECESSED

Cross Reference | NSN 1240-00-996-3824
Part Number Cage Code Manufacturer
861980852808DUNLIN MANUFACTURING / SKYPENINDUSTRIES INC
861980899620RUOFF & SONS INC
861980811934SEILER INSTRUMENT AND MANUFACTURINGCOMPANY, INCORPORATED
861980819200US ARMY ARDEC RDECOM
Technical Data | NSN 1240-00-996-3824
Characteristic Specifications
STYLE DESIGNATOR RECESSED
HOLE DIAMETER1.188 INCHES MINIMUM AND 1.406 INCHES MAXIMUM
OVERALL LENGTH0.094 INCHES MINIMUM AND 0.109 INCHES MAXIMUM
RECESS DIAMETER1.391 INCHES MINIMUM AND 1.406 INCHES MAXIMUM
RECESS DEPTH0.057 INCHES MINIMUM AND 0.082 INCHES MAXIMUM
THREAD SIZE1.531 IN.-32NS-2A
MATERIAL ALUMINUM ALLOY 2024
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY2
WIDTH0.031 INCHES MINIMUM AND 0.047 INCHES MAXIMUM
DEPTH0.047 INCHES MINIMUM AND 0.062 INCHES MAXIMUM
DRIVE FACILITY ANGULAR SPACING IN DEG180.0
INTERNAL ANNULAR SERRATION NOT PROVIDED
GUIDE DESIGN THREAD CHAMFER
GUIDE LOCATION BOTH EDGES
SETSCREW NOTCH NOT PROVIDED
FSC APPLICATION DATAPERISCOPE,TANK M36