• Flat round screws with square neck made of stainless steel (A2) according to DIN 603. • The flat round screw with square neck, also called locking screws, are mainly used with a nut. When tightening, the square neck serves as protection against twisting. • Versatile use: engineering, bicycles, home technology, garage construction, metal and wood, furniture and garden tools, pipes, electrical installation, visual protection walls. • Material: stainless steel (V2A) – professional quality. • Size: D = 5.0 mm. • Length (without head): 90.0 mm, full thread. • Package content: 10 units.