National Item Identification Number
01-144-2934
011442934
3040-01-144-2934
3040011442934
National Stock Number
Item Name
RETAINER,OPTICAL ELEMENT
Federal Supply Class
3040
Description
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.
Commercial and Government Entity Code (Supplier Data)
80063
Reference Numbers (Part Numbers)
SM-D-967955-2
Required Categories
MATERIAL
SURFACE TREATMENT
DRIVE TYPE
HOLE OR SLOT QUANTITY
WIDTH
INTERNAL
Required Description
STEEL, CORROSION RESISTING
BLACK OXIDE, MIL-C-13924, CLASS 4
SLOTTED
1
0.175