Circular Dies Bohrcraft 4200, HSS-G, DIN EN 22568 Form B

Circular Dies Bohrcraft 4200, HSS-G, DIN EN 22568 Form B is a precision tool designed for cutting external metric ISO threads in accordance with DIN 13. At the core of its construction is high-speed steel (HSS-G), which provides consistent performance when working with materials up to 800 N/mm² tensile strength. The die is manufactured to DIN EN 22568 standards, ensuring dimensional accuracy and interchangeability within industrial threading systems.

The Form B configuration features a closed, preslotted design, making it well-suited for integration with standard die holders and threading machines. This structure supports stable operation and repeatable results during threading tasks. The product is available in a comprehensive range of metric sizes, allowing users to select the appropriate diameter and pitch for their specific requirements.

Each die is engineered for general use in good machinable materials, such as mild steel and similar alloys. The preslotted, closed design of Form B helps maintain alignment and chip flow during operation, contributing to reliable thread formation. The robust HSS-G material ensures the die withstands the demands of workshop and production environments.

Bohrcraft 4200 Circular Die, HSS-G, DIN EN 22568 Form B

Technical Construction and Features

This circular die is built for cutting external threads on cylindrical workpieces. The HSS-G material delivers stable cutting performance and durability. The die’s geometry is optimized for use with standard die stocks or can be mounted on compatible threading machines, providing flexibility in workshop setups.

• Material: High-speed steel (HSS-G)
• Standard: DIN EN 22568
• Form: B (closed, preslotted)
• Thread type: Metric ISO, DIN 13
• Suitable for tensile strength up to 800 N/mm²
• Available in a wide range of metric diameters and pitches

The die’s closed, preslotted design helps to ensure proper chip evacuation and thread accuracy. Its compatibility with metric ISO threads makes it a practical choice for maintenance, repair, and production applications where standardization is essential.

Dimensional Range and Selection

Bohrcraft 4200 Circular Dies is offered in multiple metric sizes, covering diameters from M1 x 0.25 up to M52 x 5. Each size is manufactured to strict tolerances, supporting consistent thread profiles and reliable fit with mating components. The die dimensions, including outside diameter and thickness, are specified for each variant to match standard die holders.

• Diameter range: M1 x 0.25 to M52 x 5
• Outside diameters: 16 mm to 90 mm
• Thickness: 5 mm to 36 mm, depending on size
• Form B: closed, preslotted for secure mounting

Users can select the appropriate die based on thread diameter, pitch, and die holder compatibility. The comprehensive size range ensures suitability for both fine and coarse metric threads in various mechanical assemblies.

Common Applications

Bohrcraft 4200 Circular Dies are commonly used in mechanical workshops, maintenance departments, and production lines for creating or repairing external threads on shafts, rods, and fasteners. They are suitable for threading mild steel, cast iron, and other machinable materials within the specified tensile strength range. These dies support tasks such as machinery repair, custom fabrication, and assembly work where metric threads are required.

Catalog Technical Content

According to the catalog, Bohrcraft 4200 Circular Die is manufactured from HSS-G and conforms to DIN EN 22568 Form B. It is designed for cutting metric ISO threads (DIN 13) and is suitable for general use in machinable materials with tensile strength up to 800 N/mm² (22.5 HRC). The die is preslotted and closed (Form B), available in a wide range of metric sizes, each with specified outside diameter and thickness for compatibility with standard die holders.