Dormer A1105.5 HSS Long Series Jobber Drill 5.50mm Pack of 10

This high-speed steel (HSS) long series drill is designed for drilling deep holes in a variety of materials and can be used by hand or with a machine. It features a tip diameter of 5.50 mm, an overall length of 139 mm, a working length of 91 mm, and a flute length of 91 mm. The drill has 2 flutes and a 118° point angle, with straight shank and DIN 340RN/BS328/ISO 494 compatibility. The finish is steam tempered with a steam oxide coating to reduce built-up edge and improve lubricity. The tool is suitable for drilling in steel, cast iron, and other metals, offering increased reach for deep-hole applications.

Technical specifications

• Tip diameter: 5.50 mm
• Overall length: 139 mm
• Working length: 91 mm
• Flute length: 91 mm
• Material: High Speed Steel (HSS)
• Point angle: 118°

Compatibility and usage

Shank type is straight and compatible with standard drill chucks and holders for HSS drills. Manufactured to the DIN 340RN/BS328/ISO 494 standards, this drill is suitable for drilling in steel, cast iron, and other metals. To use, insert the drill into a compatible drill chuck or machine spindle and tighten securely. Use appropriate cutting fluid or coolant to extend tool life and improve performance. Apply steady pressure during drilling and operate at the recommended speeds for the material.