Sirius 12.9 Grade Socket Head Cap Screws UNC

This variant of the Sirius 12.9 Grade Socket Head Cap Screws is sized at 3/8 UNC diameter x 3-1/2" length, supplied in a pack of 50. An extended-length fastener for demanding through-bolt applications where deep thread engagement at 3/8 UNC diameter is critical to assembly integrity. 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 Specifications: Diamete