Sirius 10.9 Grade Socket Button Head Screws

The Sirius 10.9 Grade Socket Button Head Screw in M16 x 50mm is the largest and most heavy-duty variant in this range, designed for demanding structural and industrial applications requiring maximum clamping force. The M16 thread delivers exceptional tensile strength, and the 50mm length ensures outstanding engagement in thick-section engineering assemblies and heavy fabricated structures. Features and Benefits: • 10.9 grade alloy steel for high tensile strength • Low-profile domed button head for a flush, clean finish • Hexagon socket drive for secure, positive engagement