All socket screws are made to ASME standard specs. Click on the Data Sheet Icon for product drawings, dimensions, performance and mechanical data.
Shoulder screws are used when the user wants to mount something with a pre-drilled hold onto a piece of equipment thats typically free spinning. They replace costly special parts such as shafts, pivots, pins, guides, linkages, and trunnion mountings and historically have good resistance to wear. The tolerance and depth of the socket on Unbrako Shoulder Screws are more resistant to rounding out.