National Item Identification Number
00-382-5646
003825646
6650-00-382-5646
6650003825646
National Stock Number
Item Name
RING,RETAINING,OPTICAL ELEMENT
Federal Supply Class
6650
Description
A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see RETAINER, OPTICAL ELEMENT. Excludes CELL, OPTICAL ELEMENT; NUT, PLAIN KNURLED; NUT, PLAIN ROUND; and RING, RETAINING.
Commercial and Government Entity Code (Supplier Data)
53711
56232
Reference Numbers (Part Numbers)
417188PC3
417188PC3
417188PC3
Required Categories
MATERIAL
THREAD LOCATION
THREAD SIZE
SCREW THREAD SERIES DESIGNATOR
THREAD C
Required Description
STEEL
INTERNAL
1 1/2-20
UNS
3B
0.250 INCHES
RIGHT-HAND
0.250 INCHES NOMIN