DIN 7991 Stainless Steel Countersunk Hex Bolts

DIN 7991 hex socket countersunk screw has external thread that commonly used in machine parts, clamping, mould fixing and so on. The flat socket head enables driving where there is not sufficient space for wrenches or sockets and allows the screw head to sit flush on the surface.Countersunk Head Screws  The hex socket screw drive has a hexagonal recess and may be driven by a hex wrench, also known as an Allen wrench, Allen key, hex key as well as by a hex screwdriver (also known as a hex driver) or a bit. Hex Socket Countersunk Head Screw Material Stainless steel 201, 665, 667, 304, 316, etc Standard GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc Non-standards OEM is available, according to drawing or samples Finish Plain/accor…