Jobber Drill, 10.1mm, Normal Helix, High Speed Steel, Black Oxide

Series J100 - Metric General purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite. Point angle: 118°, helix angle: normal, web thickness: standard, relief angle: 10° - 20°, tolerance of diameter: h8, tolerance of shank: f11. Manufactured to BS 328/DIN338RN. Black Finish (W-Finish) This is the most common surface finish and is the result of a steam tempering operation in which steam is passed over the product during a controlled tempering cycle, producing a black oxide layer. Black tools are generally recommended for ferrous applications where the oxide layer aids chip flow, helps to dissipate heat by retaining some coolant on the tool surface and also helps to prevent the tool from staining. The J100 Series are general purpose HSS straight shank drills with a black oxide finish. Ideal for applications involving steel (including cast steel) cast iron (including malleable cast iron) as well as nickel, brass aluminium alloys and graphite. Their 118° point allows for precise hole alignment and reliable cutting performance whilst the black oxide coating helps reduce heat by retaining coolant on the tool surface. The coating also helps reduce the risk of the tool staining. Features and Benefits • High speed steel construction for increased tool durability • Point angle of 118° for precise holemaking and precision cutting • Black oxide coating helps aid chip flow, reduce heat and prevent staining • Ideal for applications involving steel, iron, nickel, brass, aluminium alloy and graphite Typical Applications • Cutting and drilling • Ferrous materials • Steel • Iron • Nickel • Brass • Aluminium alloy • Graphite Notes • Available in sizes 0.25mm -20.00mm Standards • Manufactured to BS 328/DIN338RN