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4 Approved for C20 25 - C50 60 cracked and noncracked concrete W-BS-S W-BS-S S Galvanised 5 micron Ø 5 – 14 mm W-BS-S A4 Stainless steel Ø 6 – 10 mm W-BS-SK W-BS-SK S Galvanised 5 micron Ø 5 – 10 mm W-BS-SK A4 Stainless steel Ø 6 – 10 mm Applications Installation Material safety factor y Mand safety factor for action y L 1 4 are included The material safety factor depends on the failure mode Approvals Certificates Technical Data Head Configuration Hex Head Countersunk Panhead Male female thread Environmental Conditions Indoor outdoor Material Composition Steel galvanized A4 stainless steel Type of Fastening Through fixing Suitable for Cracked and noncracked concrete Please check with your Würth sales rep for hotdipped galvanised version Anchor size [mm] 5 6 8 10 12 14 Effective anchorage depth h ef [mm] 27 31 44 35 43 52 43 60 68 50 67 80 58 79 92 Drill hole diameter d 0 [mm] 5 6 8 10 12 14 Drill hole depth h 1 > [mm] 40 45 60 55 65 75 65 85 95 75 95 110 85 110 125 Wrench size SW [mm] 10 13 13 15 17 21 Noncracked concrete Tensile C20 25 Nperm [kN] - 1 9 4 3 3 6 5 7 7 6 5 7 9 5 12 4 7 6 12 8 16 8 10 3 16 4 20 7 Shear ≥ C20 25 Vperm [kN] - 3 3 3 3 4 9 6 4 8 1 6 6 16 2 16 2 8 3 19 0 19 0 10 3 26 7 26 7 Cracked concrete - Tensile C20 25 Nperm [kN] - 1 0 1 9 2 4 4 3 5 7 4 3 7 6 9 2 5 7 9 0 11 7 7 2 11 5 14 5 Shear ≥ C20 25 Vperm [kN] - 2 8 3 3 3 4 4 6 6 1 4 6 15 2 16 2 5 8 18 0 19 0 7 2 23 0 26 7 CONCRETE SCREW BOLT W-BS Advantages • High load capacity • Small edge and spacing distance • Easy and fast to install • Immediate load bearing capacity no waiting time • Thanks to the three possible fixing depths it is particularly flexible 6-14 mm • Equal loads for galvanized steel and A4 versions • Certified adjustably within the specified limits 8-14 mm