HSS-Co Heavy Duty Straight Shank Jobber Drills (Inch) heavy duty drill made of 5% cobalt material with excellent heat resistance. To drill steels with tensile strength up to 1,400 N/mm?, very hard bronze, stainless steels as well as heat and acid resistant steels. | | Features and Benefits | • 5% cobalt material with excellent heat resistance | • Can be used to drill steels with tensile strength up to 1,400 N/mm? | | Specifications | • Cobalt construction (5%) | • Point angle: 135? | • Helix angle: Normal | • Web thickness: Strengthened | • Relief angle: Normal | • Tolerance of diameter: H8 | • Tolerance of shank: F11 | • Manufacturing Standard: BS 328, DIN 338B | | Typical Applications | • Very hard bronze | • Stainless steels | • Acid resistant steels | • Heat resistant steels