The 300 series stainless steel panel screw has a socket cap head and hex socket drive. The 300 series stainless steel material provides strength and offers good corrosion resistance in many environments. The material may be slightly magnetic. The socket cap head is round with a flat top and a high profile that provides high strength, and installs using an internal drive system that enables more compact spacing than a hex head cap screw. The hex socket drive has a hexagonal slot that requires an Allen key driver, also known as a hex key or Allen wrench.

Panel screws are used to fasten panels to a frame. The screw head and unthreaded shank hold the panel in place when the threaded portion of the screw is fastened to the frame.