Stainless Steel Hexagon socket button head screws with Collar

Product Description: Product Name: Hexagon socket Flanged button head screw  Size standard: All Bolts meet ASME B 18.3   Hexagonal flat round head flange (Huasi) screw with flange surface on the head to enhance anti loosening performance. The flange spreads out pressure, reducing damage to thin and soft materials. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver， At the same time, the hexagonal hole also increases the torque during driving. The length of the screw is measured from below the flange.    Applications：  Hexagon socketbutton head screws with collar， Its main function is to standardize the design, size, and performance requirements of an internal hexagonal round head screw with an integrated flange (washer/washer), which is widely used in mechanical assembly scenarios with high demands for fastening efficie…