5,5x50 Selbstbohrer TEK Schrauben Befestigung Metall Dachverkleidung Blechbohrer
Self Drilling TEK Screws (Heavy Gauge) Fine Thread. Maximum Fixture Thickness without washer – 23mm. Maximum Fixture Thickness with bonded washer – 20mm. High Tensile Hardened Steel Zinc plated. Bonded Washer Size – 19mm.