Dormer High Speed Steel Long Series Twist Drill Bit, 195mm Overall Length, 1 inch Size, Helical Flutes, Cylindrical A1107/16

The Dormer A1107/16 Long Series Twist Drill Bit is a precision-engineered tool designed for demanding industrial and mechanical applications that require deep hole drilling. Manufactured from high speed steel, this drill bit offers outstanding durability, wear resistance, and the ability to maintain sharpness at high temperatures, making it suitable for continuous and heavy-duty use.

With a 1 inch diameter and 195mm overall length, it is engineered for tasks that need extended drilling depth, such as fabricating structural components, assembling machinery, and metalworking operations where accuracy and consistency are paramount. The helical flute design facilitates efficient swarf removal and reduces the risk of clogging, ensuring smooth drilling progress in steel, cast iron, and other metals.

The cylindrical shank provides compatibility with standard industrial drill chucks, ensuring firm and reliable mounting. Its bright polished finish minimizes friction, helps in achieving precise hole diameter, and extends tool life during repetitive operations. The 4 flute configuration improves chip control and stability, while the standard 118° drill point angle is optimized for conventional machining in a variety of materials.

Conforming to ISO 494, BS 328, and DIN 340 RN standards, the Dormer A1107/16 twist drill bit guarantees dimensional quality and interchangeability in professional workshop environments. Applications include fabrication, maintenance, repair, automotive, manufacturing, and general engineering tasks.

This drill bit is particularly recommended for deep hole tasks where maintaining an accurate trajectory and minimizing tool deflection are crucial. When drilling, clearing the flutes periodically helps prevent fouling and ensures optimal performance over the life of the tool.

Browse other Dormer twist drill bits in the Drill Bits category for more sizes, lengths, and specifications suitable for your workshop or industrial needs.