Model #C685-17

Optical element retaining ring (NSN 6650-00-499-2802)

Special Features
32 pitch anti-reflection thread inside surface of both ends, six ea holes 0.1540 in. Dia. Drilled through external flange, external flange has two ea rectangle milled areas 1.812 in. From center of ring diameter to outer edge offlange and 1.000 in. Wide, 1 ea hole 0.110 in. Dia. Drille through external flange, 2 ea holes 0.188 in. Diameter drilled through body of ring
Description

3b thread class, 2.343 inches nominal overall length, 4.688 inches nominal outside diameter, aluminum alloy 6061 material.

Groove Diameter
3.270 inches
Thread Length
0.472 inches
Thread Size
3.250 in.-32
Aperture Diameter
2.954 inches
Inner Groove Width
0.060 inches
Screw Thread Series Designator
Uns
Thread Location
Internal
Internal Flange Thickness
0.219 inches
Groove Location
Inside face of flange
Knurled Periphery
Not provided
Material
Aluminum alloy, qq-a-225/8
Surface Treatment
Anodized black
Description
Ring,retaining,optical Element
Cage Code
34228

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Updated: 04/20/2024