Sirius 12.9 Grade Socket Head Cap Screws UNC

This variant of the Sirius 12.9 Grade Socket Head Cap Screws is sized at 1/2 UNC diameter x 2-1/2" length, supplied in a pack of 50. Suitable for deep through-bolt applications and multi-layer heavy assemblies where substantial shank length is needed alongside the strength of a 1/2 UNC Grade 12.9 fastener. Features and Benefits: • Grade 12.9 high tensile alloy steel construction • UNC thread for secure, compatible fastening • Internal hex socket head for high torque drive • Compact head profile for use in tight spaces • Precision-machined threads for consistent performance