UNC Socket Head Countersunk Screws ASME B18.3-2012 5/16 inch in A2 Stainless Steel
A countersunk headed screw conforming with ASME/ANSI B18.3, requiring a hex key (otherwise known as an
Allen key) to fit. The countersunk head is typically used in conjunction with a countersunk hole providing
a flush, snag free fit. Generally manufactured with a full thread, though occasionally some stock may
include a partially threaded shank.