SCREW HOLE CABLE TIES & SELF TAPPING SCREWS Each pack contains an equal number of cable ties & fixing screws.Cable ties have a moulded hole in one end for secure fixing.Supplied with stainless steel self tapping screws for fixing to wood or metal.Cable tie size 4.8mm x 200mm.Pozi pan screw size 4.2mm x 19mm.Ties manufactured from black polyamid nylon 66.Zero Halogen.Flammability rating : - UL 94 Class. V2 Dielectric Strength : - 50,000 volts/mm.Resistance to external agents.Excellent Resistance to bases, oils, grease and oil products.Limited Resistance to all acids.No Resistance to Phenols.