Socket head cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold.
Use an Allen wrench (hex key) to secure with required torque as needed.Size: 3/8 inch-16 X 1-3/4 inchButton Head, Hex (Allen) DriveInstalls using an Allen wrenchCan be used in tight spaces where there may not be room for a socket tool or wrenchOften used in machinery, tools and diesThread Type: Coarse, Thread Class: UNC-3A, Point Style: BluntSpecification(s) Met: ASME B18.3 and ASTM F879 Rounded head has splined outer circumference with internal hex drive..