A set screw is generally a headless screw but can be any screw used to fix a rotating part to a shaft, such as a line shaft or countershaft. The set screw is driven through a threaded hole in the rotating part until it is tight against the shaft. The most often used type is the socket set screw, which is tightened or loosened with a hex key.
Available in Metric M2 to M20 in various lengths. In Imperial UNC from 3/16″ to 3/4″ , UNF 3/16″ to 1/2″ and BSW in 1/2″ Cup Point Grub Screws.
We also carry a range in Metric and UNC in 304 Stainless Steel.
Other sizes are available but, as special buys, may require being purchased in box quantities.