Dormer HSS Drill Bit 1 in 1 Inch, 106mm Overall Length, 3.3mm Shank Size, Cylindrical Shank, 4-Flute Helical, 118° A1103.3

Dormer A1103.3 Drill Bit at 106mm overall length and 1 inch drill bit size is engineered for precision and durability in industrial and mechanical applications. Made with high-speed steel and steam tempered for corrosion resistance, it offers reliable performance for drilling through various materials including steel, cast iron, plastics, and aluminium.

The drill bit features a cylindrical 3.3mm shank and a 4-flute helical design for excellent chip evacuation and reduced heat buildup. Its 118° drill point angle provides strength and can be easily reground, ensuring longevity and consistent cutting quality. With a drilling length of 69mm, it supports deep hole drilling in manufacturing, aerospace engineering, and building maintenance contexts.

Conforming to ISO 494, BS 328, and DIN 340 RN standards, this bright-finished tool is compatible with both handheld and machine drilling. Its single-piece configuration makes it ideal for maintenance and precision engineering tasks requiring a reliable, long-lasting drill bit.

Constructed from high-speed steel (HSS) for durability. Steam tempering minimizes corrosion risk. 118° drill point angle ensures strength and ease of regrinding. 4-flute helical design facilitates chip removal. Drilling length of 69mm supports deep hole drilling.

Meets ISO 494, BS 328, and DIN 340 RN standards. Versatile use in aerospace, metalworking, and building maintenance. Bright finish for enhanced tool life. Single-piece design for precision applications.

This Dormer drill bit is a precision tool suitable for professional industrial use across aerospace engineering, metalworking, manufacturing, and construction environments. Browse EnvMart for more high-quality Dormer Drill Bits and power tool accessories optimized for industrial efficiency and precision.