Roofing Bolts with Square Nuts.
• Available in a large range of sizes.
• Zinc plated in resealable bag.
• Double slotted roofing bolt complete with square nut.
• Fully threaded.
• Low profile cross slotted mushroom head.
• Clearance hole size is usually 1mm more than the bolt diameter.
• Suitable for both interior and exterior use.
• Can be used on many DIY projects other than roofing.
