DIN Standards Overview: Drilling Tools

This Insight Post explores the use of the German DIN Standards associated with Drilling and certain Cutting Tools found on the Quality Tools UK Website. This blog post explains what “DIN” stands for, where it originated from, what it is and who controls it. As well as providing a list of the common DIN Standards associated with some of the RUKO and TERRAX by RUKO Tools, for both DIY and Industrial heavy-duty Construction projects, supplied by Quality Tools UK.

What does DIN mean?

DIN stands for Deutsches Institut für Normung, which translates to the German Institute of Standardisation. It originated in 1917 within the capital city of Germany, Berlin, establishing itself as the standard for most German products and becoming the nation’s ISO member body. Overtime, predominately based on the expansion of Germany’s export market, the standard became more internationalised. Now, it is a prominent standard for certain products around the world, still headquartered in Berlin with over 35,000 documented DIN Regulatory Standards and Norms within existence. Although dwarfed by comparison to the modern ISO Standards (International Standards Organisation), it is still currently one of the top-ranking global standards alongside EN and CE (European Committee for Standardisation), BS or BSI (British Standards Institution), AFNOR (Association Française de Normalisation), IEC (International Electrotechnical Commission), IEEE (Institute of Electrical and Electronics Engineers) and the Environmental Standards.

Are DIN Standards compulsory?

No, DIN Standard are not a compulsory measure for product manufacturing. Products DO NOT have to follow the DIN Standards. Anyone can apply for DIN Standards, and they are purely voluntary, however, they can become mandatory if applied/stated within select contracts, laws and regulations. It is also widely beneficial for manufacturers to conform to DIN Standards to demonstrate a robust, reliable, acceptable and trustworthy product or service to a consumer.

Who controls and regulates the DIN Standards?

The DIN Standards are assigned by the German Institute of Standardisation. Based in Berlin, Germany, this private organisation has a primary interest on focusing on products produced or imported into Germany, although also processing documents for goods being manufactured within Germany and being exported worldwide (especially within Europe). They have strong connections with the International Standards Organisation and particularly strong associations with the European Standards Body (CEN), to ensure reliable and accurate regulation. As such, some products contain the standards marked “DIN EN” which resembles a standard regulated by the German Institute of Standardisation in conjunction with the European Standards Committee.

What are the main DIN Standards used in Drill Bits?

The most common DIN Standards for Drill Bits include:

• DIN 333 – Typically applies to Centre (or Center) Drill Bits with a 60° Includes types R, A and B. Used for drilling centre holes within a surface workpiece material.
• DIN 338 – The most used Drill Bit Type, these are industrial level Jobber Twist Drill Bits, established worldwide as the pinnacle of metal drilling applications. From DIY tasks to heavy duty construction/building top-level projects. These tools are cylindrical shaped Drill Bits, part of the Jobber series with a parallel shank and typically short in length.
• DIN 340 – Similar to the DIN 338 Drill Bits, these are also part of the Jobber series, with a cylindrical shaped parallel shank, however they are usually longer in length, providing users with a deeper hole cut into the surface material.
• DIN 345 – The standard normally associated with Morse Taper Drill Bits, ideal for arbors with the Taper shank.
• DIN 1869 – This standard is applicable to cylindrical shank Drill Bits but with an extra long length to them, exceeding the length of the DIN 340 sizes.
  
• DIN 1870 – As with DIN 1869, this also applies to extra-long Drill Bits, however, these standards of Drill Bits feature a Taper shank.
• DIN 1897 – This standard sets the requirements for cylindrical shank Drill Bits with a much shorter than usual length. Typically, Jobber Twist Drill Bits that are smaller in size than the common DIN 338 Jobber Twist Drill Bits. Examples include Weld Point Drill Bits with Fast Cut capabilities.
• DIN 6537 – Founded to regulate cylindrical shank solid Twist Drill Bits in hard metals.
• DIN 6539 – Established to outline other cylindrical shank solid Drill Bits in hard metals.
• DIN 8037 – For cylindrical shank Drill Bits that contain Carbide Inserts, built for metallic materials.
  
• DIN 8374 – Step Drill Bits with cylindrical shanks follow these standards, specifically Step Drill Bits designed for through holes and chamfers for countersunk head screws.
• DIN 8376 – Subland Drill Bits are graded by this DIN Standards, a form of Step Drill Bits providing a two-in-one solution of two different diameters within a single tool.
• DIN 8378 – Step Drill Bits with cylindrical shanks follow these standards, specifically ones developed for tapping pilot holes.
• DIN 8379 – Step Drill Bits with Morse Taper shanks utilise these standards, specifically ones developed for tapping pilot holes.
• DIN 1412 – Sometimes referred to as DIN 1412 C, these provide compliancy to more specialised Drill Bits such as Pilot Drill Bits. Accessorised within Hole Saw Cutter tools to provide a drill point when performing a hole cut process.

Common DIN Standards used in Tap & Die Thread Cutting Tools

• DIN 1814 – Associated with adjustable Tap Wrench equipment. Used to clamp the shank of a Hand Tap tool, for Thread Cutting applications.
• DIN 2181 – Hand Taps follow these standards. Frequently associated with High-Speed Steel (HSS) Ground Taps with a straight shank in sets of 2 with thread sizes M1 to M52.
• DIN 225 – Associated with Die Stocks. Used to clamp the shank of a Hand Tap tool, most commonly, closed and slotted taps.
• DIN 22568 – Assessing Round Die Products, accessories for Hand Taps. Thread Cutting equipment used to produce external threads.
• DIN 24231 – Assessing Round Die Products, accessories for Hand Taps. Thread Cutting equipment used to produce external threads.
• DIN 352 – Studies and lays out the requirements for Tap Sets. Hand Taps follow these standards. Round Dies and Tap Wrenches also follow these requirements. Typically assessing thread sizes from M1 to M68.
• DIN 377 – Used to assess Extension Sleeves, works as extension for hand thread-cutting tools. Inside and outside square of identical size.
• DIN 382 – Assesses Bolt Die Tools, accessories for Hand Taps. Thread Cutting equipment used to produce external threads.
• DIN 5157 – Hand Taps follow these standards. Usually single cut, straight shank, High-Speed Steel (HSS) Ground Taps.
• DIN 357 – Nut Taps follow these standards. Specialised Machine Taps with square shanks, constructed from High-Speed Steel (HSS), used to produce nuts within a thread cutting application.
• DIN 371 – Machine Taps follow these standards. Assigned to Taps with a reinforced shank with thread sizes M1 to M10.
  
• DIN 376 – Machine Taps follow these standards. High-Speed Steel (HSS) Ground Taps, single cut with a straight shank.
• DIN 374 – Machine Taps follow these standards. Assigned to Machine Taps with thread sizes from M3 to M52.
• DIN 2174 – Used for defining the standards of Forming Taps, as shaping is done without cutting, no interruption of the course of the fibre in the material. The deformation creates very rigid threads. Provides consistent accuracy even with high productivity.
• DIN 2182 – Machine Taps follow these standards. Thread sizes M1 to M52 with straight shanks.
• DIN 40430 – Machine Taps follow these standards. PG High-Speed Steel (HSS) Ground Taps with straight shank.
• DIN 5156 – Machine Taps follow these standards. HSSE-Co5 Ground Taps with straight shanks.

Common DIN Standards used in Countersink Products

• DIN 334 – Standards used to assess Countersink Bits/Tools with a 60°
• DIN 335 – Standards used to assess Countersink Bits/Tools with a 90°
• DIN 373 – Typically associated to Flat Countersink Bits with a fixed pilot guide.

Common DIN Standards used in Rotary Burr Range

• DIN 8033 – Rotary Burr Grinding Tool Bits typically comply with the DIN 8033 Standards set by the German Standardisation Institute.

Quality Tools UK

View an extensive range of Drilling and Cutting Tools compliant with DIN Standards online at Quality Tools UK with Free Next Working Day Delivery on all orders over £50.

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