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| Country of Origin | India |
|---|---|
| Brand | Dormer |
| Material | High Speed Steel |
| Model | A1105.5 |
| Finish | Bright |
| Overall Length | 139mm |
| Shank Type | Cylindrical |
| Shank Size | 5.5mm |
| Drill Bit Size | 1in |
| Flute Type | Helical |
| Standards/Approvals | DIN 340 RN, ISO 494, BS 328 |
| Number of Flutes | 4 |
| Drill Point Angle | 118° |
| Drilling Length | 91mm |
Dormer A1105.5 high speed steel drill bit is a precision-engineered tool designed for demanding industrial machining applications. With an overall length of 139mm and a 1 inch drill bit size, this cylindrical shank drill bit offers excellent performance in cutting steel, cast iron, and similar materials.
Constructed from high speed steel (HSS), it ensures longevity and resistance to wear even under prolonged use. The drill includes 4 helical flutes that facilitate effective chip evacuation during drilling, minimizing heat buildup and improving cutting efficiency.
The bright finish along with steam tempering enhances wear resistance, making it suitable for general machining tasks requiring reliability and precision. The drill point angle of 118 degrees optimizes cutting edge sharpness and penetration rate.
Manufactured to comply with DIN 340 RN, ISO 494, and BS 328 standards, this metric long series twist drill conforms to recognized industrial standards, assuring consistent quality and performance. The 91mm drilling length allows for deeper holes where longer reach is necessary.
This drill bit is widely applicable in workshops, manufacturing plants, and machine shops for metal fabrication, automotive, and engineering use cases. It is ideal for engineers and technicians requiring a durable, high quality tool for steel and cast iron drilling operations.
Constructed from high speed steel for superior durability. Features 4 helical flutes for efficient chip removal. Cylindrical shank type ensures secure grip during drilling. Bright finish and steam tempered for wear resistance.
Drill point angle is 118 degrees for optimal cutting performance. Complies with DIN 340 RN, ISO 494, and BS 328 standards. Ideal for drilling steel and cast iron materials. Drilling length of 91mm for deeper hole drilling.
Suitable for use in industrial machining and manufacturing environments. Model A1105.5 ensures standard size and compatibility. Explore more high precision drill bits and power tool accessories in the Industrial Tools & Equipment category at EnvMart.
Explore more products in our Drill Bits & Parts category.
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