Drills acc. to DIN

What are HSS twist drills?

HSS twist drills (High-Speed Steel) are essential tools in metalworking. They are made from high-speed steel, which provides excellent heat resistance and durability. These drills are ideal for drilling in hard materials such as steel, cast iron, and alloyed metals. Their helical flutes ensure effective chip removal, allowing for precise and clean holes. HSS twist drills are characterized by their high cutting speeds, making them suitable for use in both handheld drills and CNC-controlled machines.

What types of twist drills are there?

Twist drills come in various designs, each developed for specific applications:

• HSS twist drills: These standard drills are ideal for machining soft to medium-hard materials such as steel and aluminum.
• HSSE twist drills: These drills contain additional alloying elements like cobalt, which increases their hardness and heat resistance. They are particularly suitable for high-strength materials such as stainless steel and titanium.
• Deep hole drills: Designed for drilling deep holes with high precision and optimal chip removal.
• Center drills: Used for pre-drilling to ensure precise holes.
• Step Drills: Ideal for drilling holes of various sizes without changing tools.
• Sheet detal drills: Specifically designed for drilling thin sheets to avoid deformation and cracking.

How are twist drills manufactured?

The production of twist drills follows a precise and multi-stage process to ensure high standards of quality and durability:

1. Material selection: The first step is choosing the raw material, usually high-speed steel (HSS) or an HSS-cobalt alloy (HSSE).
2. Blank manufacturing: The material is shaped into the rough form of a drill.
3. Cutting and milling: The characteristic helical flutes are then ground, which are crucial for chip removal.
4. Hardening and tempering: The drill is hardened to increase its wear resistance and then tempered to reduce internal stresses in the material and achieve the right balance between hardness and toughness.
5. Coating: Depending on the application, the drill may be coated with special coatings such as titanium nitride (TiN) to extend tool life and facilitate machining of difficult materials.
6. Finishing and quality control: Finally, the drill is sharpened and subjected to strict quality control to ensure compliance with DIN standards.

DIN-compliant HSS and HSSE twist drills from Nachreiner

In metalworking, especially in chip-forming drilling processes, DIN specifications are essential. For the precise manufacturing or processing of workpieces or end products, these defined standards must be adhered to very closely to avoid scrap and quality issues. For compliant machining, Nachreiner tools only offers top-quality HSS and HSSE twist drills that meet the respective requirements precisely. You will find precision quality metal drills in our range according to the following common DIN specifications:

• DIN 338
• DIN 340
• DIN 341
• DIN 344
• DIN 1897

Additional HSS and HSSE twist drills according to other specifications and standards can be supplied upon request. Customized solutions are also possible. Please contact our specialists, who can create a personal offer tailored to your requirements. The same applies to sizes or variants that you may not find immediately in our range.