CE RD PHG 250 0305 Copyright 2010 by Wurth 14 0199 Drill Bit for Boron Steel Application For removing spot welds on boron steel T ungsten Carbide drill bit is the only bit tough enough to survive boron steel B oron steel is a ultra highstrength steel UHSS Its a lightweight very hard steel increasingly used in todays vehicles This bit is extremely hard and brittle and requires careful use E ven with careful use the bit will become dull after approximately 100 spot welds All major manufacturers both domestic and import nameplates including European and Asian manufacturers are increasingly using boron and other ultra highstrength steels in their cars Application A pneumatic Cclampstyle drill is recommended for use with this bit to ensure even pressue is applied on the bit U se a low rpm of 8001000 to prevent heat build up and therefore dulling the bit S tart the bit flat against the metal Do not let the drill bit impact the metal D o not start the bit at an angle as this may result in breaking off a flute Important These drill bits require use by trained and skilled professionals No warranty is intended or implied Precisely follow the instructions on the product insert for maximum product life Dia A B C Art No P Qty 8 mm 516 46 mm 1 1316 18 mm 4564 7 mm 932 710800 1