Regular Center Dowel Punch Blanks - Metric (M2 Steel)

Center-dowel punch blanks are used in injection and forming-related die tooling where precise punch alignment is critical to keep piercing/blanking features concentric and consistent across production runs. This metric dowel-punch blank style supports punch-and-die sets by providing a stable locating interface that helps reduce misalignment during cycling.

• Automotive connector and bracket blanking tools: used to maintain repeatable punch positioning for high-volume strip processing, where the steel variant (M2) supports improved wear resistance at the punch tip and edges.
• General industrial blanking dies for sheet/plate: ideal when operators need straightforward metric sizing for standard press builds and consistent center locating across multiple cavities.
• Tooling refurbishment and rework: blanks can be machined into custom punches while preserving the center-dowel alignment features for stable downstream assembly.

With shank diameters of 10–32 mm and lengths from 71–150 mm, this configuration fits a wide range of die-set layouts that rely on metric center dowel locating.

This series is available in A2 or M2 steel. The M2 grade (a common AISI M2 high-speed steel) is selected when you need higher wear resistance for long production runs; it typically offers a better balance of hot wear and cutting performance than basic tool steels, though it can be less forgiving to shock loading than tougher grades.

For the machining and heat-treatment pathway, these blanks are generally supplied in a heat-treated condition suitable for further toolmaking: common practice is to use a quenched and tempered state for tool steels, while high-speed steel (M2) is typically hardened via austenitizing, then quench and temper or similar HSS hardening cycles, followed by final finishing for size control.

• Wear resistance vs. toughness: M2 generally improves wear resistance; A2 can provide a tougher feel for varied load profiles.
• Hardness (typical expectation): hardened tool steels are commonly specified in the mid-to-high HRC range after proper heat treatment; final hardness should follow the supplier’s heat-treatment specification for your selected variant.

Correct sizing begins with matching the blank’s shank diameter (D) and overall length (L) to your punch holder and die-set geometry. This series offers D = 10, 13, 16, 20, 25, or 32 mm, and L = 71–150 mm (fixed length range).

• Select D first: choose the shank diameter that matches the punch guide/bushing or locating bore in your tooling stack-up. Using the exact D helps maintain proper concentricity with the center dowel arrangement.
• Then select L: set the length to cover the required protrusion and fully engage the punch holder while leaving sufficient clearance for cycling and stripping.
• Tolerance and fit: dimension verification is important because post-processing (grinding/machining into the final punch) can affect fit to the guide and alignment features. If your design uses tight guide fits, confirm your required tolerances before final machining.

These blanks are fixed dimension options within the stated D values and the L range; they are intended to be machined into your final punch dimensions while retaining the locating stability of the center-dowel feature.