5.0mm (Heavy) Restraint Strapsare available either straight, bent or twisted for a variety of fixing options. CE Marked and tested to BS EN 845-1:2008 Designed in accordance with The Building Regulations, BS5268 Part 3 and other building standards for vertical and horizontal restraint. Multi holed at 25mm offset centres, restraint straps should be fixed using either 50mm long no. 12 woodscrews (using wall plugs in masonry for vertical restraint) or 75mm x 4.0mm diameter galvanised nails into timber. Stainless steel screws or nails must be used when fixing stainless steel straps.