Sirius 10.9 Grade Socket Button Head Screws

The Sirius 10.9 Grade Socket Button Head Screw in M4 x 20mm is well suited to applications where a longer M4 fastener is needed to pass through multiple layers of material. The 20mm length ensures solid thread engagement for reliable clamping in panels, brackets, and machine assemblies. 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 • Heat-treated for durability in demanding applications Specifications: Size: M4 Length: 20mm Qty: Pack o