Special Features:

2.090 in. Flange dia; 1.781 in. First shoulder dia; 1.761 in.-48ns-2a thread; 1.726 in. Shoulder end dia; 0.125 in. Flange thk; 0.140 in. First shoulder lg; 0.187 in. Thread lg; 0.063 in. Wide undercut between thread and first shoulder; 1.572 in.-48ns-2b bore thread; 0.390 in. Bore thread lg; counterbore 1.581 in. By 0.060 in. Deep on shoulder end; one slot 0.063 in. W. By 0.050 in. Deep on face of shoulder end; 0.030 to 0.034 in. Bore eccentricity from geometric axis; 250 microinch finish except 125 microinch finish on first shoulder and inside face of flange; all edges chamfered 0.010 in. Max. By 45 deg

Properties:

A cylindrical item specifically designed to hold a lens, reticle, or window in an optical system. Includes eccentric cells and/or rings designed to be rotated within the instrument to shift an optical element to a prescribed position.