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Dormer High Speed Steel Tin 3.9mm Shank Diameter, 75mm Overall Length, Titanium Nitride Coated Drill Bit Set A0023.9
Specifications
| Country of Origin | Brazil |
|---|---|
| Brand | Dormer |
| Material | High Speed Steel Tin |
| Model | A0023.9 |
| Finish | Titanium Nitride |
| Overall Length | 75mm |
| Note | With diameters ranging from 3 → 6.9 mm, these drill bits are sold in 5-piece / 10-piece packs or individually from the 7 mm size |
| Shank Type | Cylindrical/Straight |
| Shank Size | 3.9mm |
| Number of Pieces | 5 |
| Flute Type | Helical |
| Standards/Approvals | DIN 338 RN, BS 328, ISO 235 |
| Number of Flutes | 4 |
| Cutting Direction | Right |
| Drill Point Angle | 118° |
| Drilling Length | 43mm |
| Dormer HSS Jobber Drill Bit, 3.9mm Diameter, 75 mm OverallBrand | Dormer |
Key Features
- Made from premium high speed steel with titanium nitride coating for enhanced wear resistance.
- Contains 5 drill bits with 4 helical flutes for efficient cutting.
- Features a 118° split point for precise positioning and better hole quality.
- Suitable for hand and machine use on steel, cast iron, aluminium alloys, plastics and more.
- Complies with DIN 338 RN, BS 328, and ISO 235 standards.
- Drill bits have a cylindrical straight shank and right cutting direction.
- Drilling length is 43mm, with overall length 75mm per bit.
- Designed for drilling up to 4 times diameter depth in various materials.
Product Description
Dormer A0023.9 High Speed Steel Tin drill bit set includes 5 industrial-quality jobber drill bits, each with a 3.9mm shank diameter and an overall length of 75mm. These drill bits feature a durable titanium nitride (TiN) coating that enhances wear resistance and extends tool life, making them suitable for challenging drilling tasks.
The bits are manufactured from premium high speed steel (HSS) with 4 helical flutes and a 118° split point design, enabling excellent positional accuracy and clean hole quality. The redesigned helix adds stiffness for improved performance and rigidity during use. These bits have a cylindrical/straight shank and are designed for right-hand cutting direction.
This set complies with DIN 338 RN, BS 328, and ISO 235 standards, ensuring reliable industrial-grade performance. These drill bits are ideal for drilling through steel, cast steel, grey cast iron, malleable cast iron, nickel-brass, aluminium alloys, graphite, and plastics. They are not suitable for masonry applications.
The 5-piece set is particularly useful for carpentry, construction, and engineering industries where fast, precise holes in various materials are required. The jobber length allows drilling depths up to approximately four times the diameter of the drill bit.
High speed steel with titanium nitride coating for durability. 118° split point tip for precise centering. Helical 4-flute design for efficient chip removal. Standard cylindrical shank for compatibility with most drill chucks.
Certified to international standards DIN 338 RN, BS 328, and ISO 235. Ideal for general purpose drilling in metal and plastic materials. Suitable for hand and machine drilling applications. Manufactured in Brazil ensuring quality control.
Set includes five 3.9mm diameter drill bits with 75mm overall length. Explore more industrial Drill Bits and cutting tools in the EnvMart Industrial Tools & Equipment category for professional-grade precision and durability.
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Frequently Asked Questions
Each drill bit in the set has an overall length of 75mm.
These drill bits are suitable for drilling through steel, cast iron, aluminium alloys, plastics, and more, but they are not suitable for masonry applications.
The drill bits have a shank diameter of 3.9mm.
The set includes five drill bits.
The drill bits feature a titanium nitride (TiN) coating for enhanced wear resistance.
The drill bits have a 118° split point angle for precise positioning and better hole quality.
These drill bits have a helical design with 4 flutes for efficient chip removal.
The drill bits comply with DIN 338 RN, BS 328, and ISO 235 standards.
The drilling length of each bit is 43mm.
The drill bits have a cylindrical/straight shank.
Yes, these drill bits are suitable for both hand and machine drilling applications.
These drill bits are manufactured in Brazil, ensuring quality control.
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