Special Features:

Material: steel 8640; surface treatment: apply protective coating mil-p-16232, type m, class 1. Finish coat all surfaces with drying type perservative oil conforming to dwg 1603000. Magnetic particle inspect in accordance with mil-i-6868. Heat treat to 200-240 brinnell;

Properties:

A drive shaft having helical thread(s) on a portion of its outer surface, machined bearing surface(s) and facilities for driving (other than a hub) on one or both ends of shaft. Designed to mate with a cam, gear sector, worm wheel, etc. Includes items with bearings. Excludes items having more than one worm complement of helical threads, items with a separate complement of gear teeth, and gear, worm.