FC61M ignation Des FC49M FC61M Unifast Self tapping screw C-thread Self tapping screws for Roof Safety and joining light section steel with thickness up to 0,7 mm without predrilling. See installation instructions below for choice of drill diameter. ension Dim apacity Drill c cl. Corropsroiotenction Material asher Ø W /socket Bit tity/pack cription Quan Des 4,8 x 13 2 x 0,7 C5 12 8 mm 250 Stainless steel Marutex. Max 2 x 0.7 mm steel without pre-drilling. 6,3 x 19 2 x 0,7 C5 16 8 mm 250 Self tapping screw C-thread – "Repair screw" FC91 7,2 x 19 - C4 A2 19 3/8” 100 Stainless steel Installaion instruction Use continuous speed control or low-speed screwdriver, suitable speed 300-600 rpm. While waiting for the execution standard EN1090-4 to be completed, it is recommended that the proce- dure according to StBK-N5 - 33:842K is used to determine sui- table hole diameters. Hole diameters according to the adjoining table should be considered as guideline values. Guideline values for drill diameter for self tapping screws, C-thread Screw, Ø 4,8 4,8 6,3 6,3 Thickness, substrate 1,0 - 1,5 1,6 - 2,0 1,25 - 1,5 2,0 - 3,0 Drill hole, Ø 3,7 3,9 5,0 5,3 C Corrosion protection classes pages 100-101 T Technical facts/installation pages 102-107 37
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