NSN 1240-01-204-5983

Part Details | OPTICAL ELEMENT RETAINER

1240-01-204-5983 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: 8587344, 1240-01-204-5983, 01-204-5983, 1240012045983, 012045983

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12MAR 28, 198501-204-598322451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-01-204-5983
Part Number Cage Code Manufacturer
858734419200US ARMY ARDEC RDECOM
Technical Data | NSN 1240-01-204-5983
Characteristic Specifications
HOLE DIAMETER0.740 INCHES NOMINAL
OVERALL LENGTH0.180 INCHES NOMINAL
THREAD SIZE0.906 IN.-32
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225 TO 6 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL ALUMINUM ALLOY 2024
INTERNAL ANNULAR SERRATION NOT PROVIDED
GUIDE DESIGN THREAD CHAMFER
SETSCREW NOTCH NOT PROVIDED