HSS multi diameter step drills produce good quality holes in a wide variety of sheet metal, using either a bench drill or light pedestal drilling machine. Manufactured from high speed steel, they offer sound rigidity, strength and stability when machining. Each tool cuts parallel holes in a range of specific sizes and is compatible with materials up to 1/8" (3mm) thick.

Features and Benefits
• High speed steel construction for greater strength, rigidity and stability
• Excellent wear and heat resistance for prolonged tool life
• Cuts parallel holes in sheet metal

Typical Applications
• Drilling
• Sheet metal

Notes
• Available sizes 1-12mm to 6-37mm

Series L100 HSS straight shank long series drills are excellent general purpose drills which are designed to drill steels with tensile strength up to 1,000N/mm2, cast steel, grey cast iron, malleable cast iron, nickel brass and graphite.

Features and Benefits
• Manufactured from HSS for improved toughness
• Black oxide coating for greater heat and wear resistance
• Ideal for general purpose drilling

Typical Applications
• Drilling
• Steels
• Grey cast iron
• Malleable cast iron
• Nickel brass
• Graphite

Standards
• Manufactured to BS 328; Part 1: 1986, DIN 340 RN, ISO 494

FC07 - Engineers Stud
Material: Medium Carbon Steel.
Hardness: HRC 30 - 35.
Surface Finish: Black Oxide.

Series J100 - Inch
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.

Bright Finish
Drills with a bright finish are supplied in the as-ground condition and such tools are used generally in the machining of non-ferrous materials.