This Sirius Roofing Bolt and Nut is an M10 x 40mm fastener, offering a longer M10 fixing for thicker roofing panels, heavy cladding or structural components. A strong, dependable fastener for demanding construction and engineering applications. Features and Benefits: • Supplied complete with matching nut • Large domed head for a neat finish • Square neck prevents spinning during tightening • High-quality steel construction • Precision metric threads Specifications: Size: M10 Length: 40mm Qty: Pack of 1 Contents: Pack of 1