Jobber Drill, 4mm, High Helix, Cobalt High Speed Steel, Bronze Oxide

Deep hole drill with high heat resistance to drill non alloyed and alloyed steels as well as long chipping materials with tensile strength up to 1,300N/mm2. Because of the special point design with web thinning form S optimised chip breaking and reduced feed force and torque. Ample chip space enables drilling over five times diameter deep without pecking.

Features and Benefits
• High speed steel and cobalt construction for increased tool toughness
• High heat resistance for prolonged tool lifespan
• Maximum material tensile strength 1,300 N/mm2
• Steam tempered finish for increased wear resistance

Typical Applications
• Drilling

Standards
• BS 328, DIN 338