Fox Fastener standard socket head shoulder screw in black oxide finish is a hardware fastener specified as 4-40 x .781 inch, suitable for installations that call for a precision shoulder screw. This fastener provides a controlled shoulder diameter for locating components and a threaded portion for secure assembly in applications where the listed screw size and finish are required.
Fox Fastener Standard Screw (4-40 X .781in TLG) Socket Head Shoulder Screw - Black Oxide