Round Die for brass DIN 223 (DIN EN 22568) HSS - M 3 x 0.5

Standard dies often "dig in" too aggressively into short-chipping materials, leading to imperfect results. The MS Series solves this problem:

• Flatter Rake Angle: Optimizes chip removal and reduces the cutting torque.
• Lapped Finish: Reduces the surface roughness of the die in an additional manufacturing step, resulting in a better, easier cut and significantly improved thread surface quality.
• Chamfered Lead: Ensures controlled chip evacuation in the cutting direction and allows chips to flow freely to the front.
• No Clogged Chip Holes: Guarantees clean cuts and extends tool life considerably.
• Conditionally Suitable for Machine Use: The lapped finish supports more precise operation even in machine use.

The MS die caters to an exceptionally wide range of materials and is ideal for many short-chipping materials:

• Optimized for machining brass (e.g., Brass MS 58)
• For short-chipping bronze
• Generally for short-chipping materials up to 800 N/mm²

1. Preparation: Turn down the round bar or shaft to the nominal thread diameter. Lightly chamfer the edges. Securely fix the workpiece in the vice or clamping device.
2. Clamping: Insert the round die into the appropriate die stock and secure it firmly with the clamping screws (Form B).
3. Lubrication: Although brass is often machined dry, a suitable lubricant is recommended for longer tool life and best quality. Apply this generously to the die and the start of the workpiece.
4. Placement: Place the die at a right angle to the workpiece axis. Apply light pressure and turn the die stock clockwise evenly.
5. Cutting Process: Continue to turn the die clockwise to cut the thread, ensuring good chip evacuation. The MS series guarantees a free chip flow to the front due to the chamfered lead.
6. Final Check: After reaching the desired thread length, carefully unthread the die completely. Check the thread with a thread plug gauge or a nut.

The VÖLKEL die for brass is available in metric dimensions up to M 30, metric fine dimensions up to M 24, and pipe threads up to G 1 inch, and is manufactured according to the following standards:

• Standards: DIN 223 (DIN EN 22568) and DIN 5158 (DIN EN 24231)
• Design: Solid Round Die (Form B) for Brass
• Material: HSS (High-Speed Steel)
• Tolerance: 6g (Standard tolerance for general fits)

Available Thread Types of the MS Series:

The MS Series covers the most important thread types:

• M (Metric ISO Thread): The globally common thread for general connections. Defined by the pitch diameter and pitch.
• MF (Metric ISO Fine Thread): Based on the M thread but has a smaller pitch. It is used when thinner-walled tubes, fine adjustments, or increased protection against loosening are required.
• G (BSP - Whitworth Pipe Thread): A non-self-sealing thread primarily used for the mechanical connection of pipes. Sealing must be achieved using additional sealants.

Learn in detail how the MS Series was optimized for short-chipping materials:

Round Dies MS – the Brass Specialist from VÖLKEL

Watch the video below to see how the MS die is used for threading in brass (MS 58):

VÖLKEL - Round Dies MS (Video Length: 1 Minute, 22 Seconds)

Q1: What makes the MS die particularly suitable for brass?

A1: It has a flatter rake angle to prevent the die from "digging in" to the soft, short-chipping material. Additionally, the lapped surface ensures an easier cut and improved thread surface quality.

Q2: What does "lapped" mean?

A2: Lapped means that the cutting surfaces of the die are polished in an additional manufacturing step to reduce surface roughness. This leads to less friction, an easier cut, and a better thread surface.

Q3: Can I use the MS die for other metals?

A3: The die is optimized for short-chipping materials up to 800 N/mm², which includes other alloys in this hardness range besides brass and bronze. For long-chipping steels, we recommend our standard or VAP series.

Q4: Why are two DIN standards specified?

A4: DIN 223 (DIN EN 22568) and DIN 5158 (DIN EN 24231) are the common standards that apply to round dies. They define the geometric dimensions and performance requirements of the tool.

Q5: Is the die suitable for machine use?

A5: It is conditionally suitable for machine use. The lapped finish supports more precise work. However, other factors (such as cutting speed and lubrication) are crucial in machine use.