Dormer A110 HSS Long Series Drill 3.5 mm Pack of 10

The Dormer A110 Metric Long Series Drill Bits are high-speed steel (HSS) drill bits designed for deep drilling and bushing perforation in steel and cast iron. They are suitable for drilling deep holes in a wide range of materials and can be used by hand or on machines. Featuring a cross-cut profile and a cylindrical shank, these bits are intended for professional and DIY applications requiring high performance. The tooling is steam-treated to provide an annealed finish under vapor, contributing to reduced built-up edge and improved lubricity while enabling deeper reach with increased length.

Features

• Long reach for deep holes
• HSS for hot hardness
• DIN 340RN compliance
• Steam-treated coating reduces built-up edge
• Cross-cut profile with finished surface
• Cylindrical shank for versatile use

Technical details

Material: HSS (High-Speed Steel). Tip diameter: 3.50 mm. Working length: 73 mm. Overall length: 112 mm. Maximum drilling depth: 6xD. Cutting angle: 118°. Profile: Cross-cut with finished surface. Shank: Cylindrical. Cutting direction: Right-hand. Nominal tolerance: h8. Standard: DIN 340. Coating: Steam-treated (annealed under vapor). Compatible with steel and cast iron materials up to 800 N in hardness. Suitable for drilling deep holes and installing bushings.