This Sirius Roofing Bolt and Nut is an M10 x 20mm fastener, providing a larger, stronger M10 thread in a compact length — ideal for heavy-duty fixings through thin sheet materials or roofing panels where maximum grip is required. 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: 20
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