Overview Sutton Tools Heavy Duty Cobalt jobber drills are industrial quality for drilling materials that have high hardness and tensile strength such as cast iron, bronze, hardened steel & stainless steel. These drill bits feature a thick core for increased rigidity in hard materials. Features 135° split point (drills > 2mm & 3/32) enables accurate positioning and less drilling pressure Thick core for increased rigidity in hard materials Precision engineered parallel shank for accurate hole size Made from HSS Co. The 5% cobalt formula improves abrasive & heat resistance, for increased strength at higher cutting temperatures Colour Tempered surface finish enables identification of cobalt tool material Specifications Pieces 21 Rises 1/16 – 3/8 x 1/64 Designation NH Material HSS Co Finish Colour Temp Max Cut Depth 5xD Shank Form A Helix Angle R25 Point Tolerance h8 Point Angle 135° Point Form Form C > 3/32* Case ABS Standard ANSI B94-11 / DIN338
