These are custom socket head screws with a low profile head measuring .270 X .078 inches, made in the USA using 303 stainless steel material.  The thread incorporated is 8-32 at 7/8" in length, with the remainder of the length as an un-threaded shoulder.  The point on these custom socket bolts has a machined socket drive matching the hex drive on the low profile head.  These unique custom screws were produced in under one week for our customer's urgent needs.