Timco 122SS Window Fabrication Screws - Countersunk With Ribs - Ph - Self-Tapping Thread - Self-Drilling Point - Martensitic Stainless Steel & Silver Organic 3.9 X 19

Multiple Uses For Fitting A Variety Of Hardware To Frames Where There Is A Steel Or Aluminium Reinforcement Present. Stainless Steel Should Be Used Where There Is A Corrosive Environment. Countersunk Head With Ribs Under Head For Improved Countersinking.PTDTIM122SS