Use an Allen wrench (hex key) to secure with required torque as needed.
0 X 12MMHeadless screw that sits flush or below the surface once installedInternal socket drive requires Allen wrench (hex key) to installInstalls into an internally threaded hole to hold an object into placeOften used in machinery to secure gears to shaftsThread Type: Coarse, Thread Class: 6G, Point Style: Cup PointSpecification(s) Met: ISO 4029, ISO 898-5, CLASS 45H.Size: M6-1.Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold.