Machine Design

Jack Screws

For use on D-subminiature connectors as a mounting screw, Sems jack screws are precision manufactured in 0.285, 0.347, and 0.660-in. lengths.

The screws feature a chromate-coated, zinc-plated body with captivated-helical-spring washers for ease of use. They come with flat washers and hex nuts.

Keystone Electronics Corp.,
31-07 20th Rd., Astoria, NY 11105,
(718) 956-8900,

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