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Dormer High Speed Steel Helical 156mm Overall Cylindrical Shank Drill Bit 7.5mm Shank Size 1in A1107.5
Specifications
| Country of Origin | India |
|---|---|
| Brand | Dormer |
| Material | High Speed Steel |
| Model | A1107.5 |
| Finish | Bright |
| Overall Length | 156mm |
| Shank Type | Cylindrical |
| Shank Size | 7.5mm |
| 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 | 102mm |
Key Features
- Made from durable high speed steel for enhanced wear resistance.
- Cylindrical shank type with a 7.5mm diameter for secure fitting.
- Helical flute design with 4 flutes for efficient chip removal.
- Bright finish for improved surface quality and corrosion resistance.
- 118° drill point angle suitable for general-purpose drilling.
- Drilling length of 102mm optimized for deep hole drilling applications.
- Complies with DIN 340 RN, ISO 494, and BS 328 standards assuring high quality.
Product Description
Dormer A1107.5 high speed steel drill bit is a precision tool engineered for machining applications requiring high accuracy and durability. This drill bit features a 156mm overall length with a 102mm drilling length, making it ideal for deeper hole drilling or where extended reach is needed. Its cylindrical shank and 7.5mm shank size provide secure and stable fitting in drill chucks, delivering consistent performance.
The bit is made from premium high speed steel, which offers superior hardness and wear resistance. The bright finish enhances corrosion resistance and surface quality, while the helical flute with 4 flutes ensures efficient chip evacuation during use. The 118° drill point angle facilitates effective cutting and reduces walking on material surfaces.
Manufactured to meet DIN 340 RN, ISO 494, and BS 328 standards, this drill bit is recommended for general machining use on steel and cast iron materials. The long series twist drill design allows for drilling up to six times the diameter of the bit before flute clearing is required, enhancing operational efficiency.
This Dormer drill bit is highly suitable for industrial, manufacturing, machine shop, and construction applications where precision drilling is essential. It supports fluid power, mechanical, and metalworking tool setups and is reliable for professional use.
High speed steel construction offers durability and wear resistance. Helical flute design with 4 flutes optimizes material removal. Bright finish protects against corrosion and improves surface finish. Cylindrical shank ensures secure grip and easy tool change.
Complies with international standards DIN 340 RN, ISO 494, and BS 328. Precise 118° drill point angle for versatile drilling tasks. Long series design allows extended reach for deeper hole drilling. Explore EnvMart’s range of drill bits and accessories suitable for industrial tooling and machining needs.
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Frequently Asked Questions
The overall length of this drill bit is 156mm.
The drilling length of the Dormer A1107.5 is 102mm, optimized for deep hole drilling applications.
This drill bit is made from high speed steel, which offers enhanced wear resistance.
It features a cylindrical shank type with a shank size of 7.5mm for secure fitting.
This drill bit has 4 flutes, designed for efficient chip removal during use.
The drill point angle is 118°, suitable for general-purpose drilling tasks.
It complies with DIN 340 RN, ISO 494, and BS 328 standards, ensuring high quality.
The drill bit has a bright finish that enhances corrosion resistance and improves surface quality.
This drill bit is recommended for general machining use on steel and cast iron materials.
The flute type is helical, which optimizes material removal during drilling.
This model is suitable for industrial, manufacturing, machine shop, and construction applications where precision drilling is essential.
The long series design allows for drilling up to six times the diameter of the bit before flute clearing is required, enhancing operational efficiency.
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