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 5/8" length, supplied in a pack of 200. A short, robust fastener in the popular 3/8 UNC diameter — ideal for compact heavy-duty joints where a larger-diameter screw is required with minimal protrusion. 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: Diameter: 3/8 UNC Length: 5/8" Qty: Pack of 200 Contents: Pack of 200