Roofing Connectors | Specialized ProductsHardware Industry Heavy Duty Cleats These are used when erecting roof trusses to create a load bearing platform. Cleats can be made of stainless grade 316 on request.Specification: 4mm 5 microns zinc coated, mild steel, red oxide. Size: 5kn, 7kn & 10kn *Heavy Duty Cleats Enquiry*