6645-01-157-0762 TIMER,INTERVAL Index 6625-01-157-0764 POWER SUPPLY

National Stock Number:
1240-01-157-0763

Federal Supply Class:
1240

National Item Identification Number:
011570763

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.


Manufacturer Information:
858741519200US ARMY ARDEC RDECOM


Techincal Specification:
DRIVE TYPEDRILLED HOLE
DIAMETER0.093 INCHES NOMINAL
HOLE DIAMETER0.254 INCHES NOMINAL
OVERALL LENGTH0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763, CLASS 303, COND A FED SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP 303
RECESS DEPTH0.625 INCHES MINIMUM AND 0.630 INCHES MAXIMUM
RECESS DIAMETER0.750 INCHES NOMINAL
STYLE DESIGNATORRECESSED
THREAD SIZE0.906 IN.-32


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