Dormer A777 Heavy-Duty HSCo Jobber Drill Bit 10.0 mm

This heavy-duty cobalt jobber drill bit is designed for demanding drilling tasks and high-temperature environments. Made from HSCo cobalt steel, it features a 135° split point for greater self-centering and reduced push force, improving accuracy when drilling tougher materials such as high-tensile metals and aerospace components. The bit is built to withstand challenging applications with a robust design, standard helix flute geometry, and a bronze oxide finish that helps prevent material build-up on the cutting edge. It is compatible with standard drill chucks and drill presses, and is suitable for use in aerospace and metalworking industries where precise, reliable performance is required.

Features

• 135° split point for self-centering
• HSCo cobalt steel for hard materials
• Bronze oxide finish reduces sticking
• Heavy-duty design for tough applications
• Standard helix, right-hand spiral, thick web

Technical specifications

• Tip diameter: 10.0 mm
• Overall length: 133 mm
• Working length: 87 mm
• Point angles: 118° (0.30–0.95 mm); 135° (1.00 mm+)
• Flute geometry: Standard helix, right-hand spiral, thick web
• Surface treatment: Bronze