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Hook bolts are widely used in the roofing industry for fixing cladding and roofing panels to steel frames. All our hook bolts, also commonly known as 'J' bolts or roofing bolts, come zinc and yellow plated and supplied with square nuts. Hook bolts are ideal for roofing as you do not need access to the 'hook' side of the bolt when tightening. The hook or 'J', sits over the edge of metal beams that stop the bolt from turning when tightened. When using hook bolts for roofing, make sure that you also use spat or sela washers to ensure you have a weatherproof seal.
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