M2 Steel Close Space Punch Blanks - Metric
Close space punch blanks - metric (M2 steel) are designed for punch applications in tight die spaces, supporting reliable ejection geometry and consistent production. Dayton standardized punch blank construction helps streamline selection for metric tool builds.
- Optimized close-space format for efficient use of limited die layout
- M2 steel with hardened punch blank construction for wear resistance
- Material-ready blanks to match controlled build requirements for punch systems
- Typical use in metric stamping, forming, and punch tooling stations
Specifications
12 configurations available
| Material | D (Shank dia.) (mm) | L (Length) (mm) |
|---|---|---|
| A2 | 02 | 40 ～ 100 |
| M2 | 02 | 40 ～ 100 |
| A2 | 03 | 40 ～ 100 |
| M2 | 03 | 40 ～ 100 |
| A2 | 04 | 40 ～ 100 |
| M2 | 04 | 40 ～ 100 |
| A2 | 05 | 40 ～ 100 |
| M2 | 05 | 40 ～ 100 |
| A2 | 06 | 40 ～ 100 |
| M2 | 06 | 40 ～ 100 |
| A2 | 07 | 40 ～ 100 |
| M2 | 07 | 40 ～ 100 |
Product Guide
Application Scenarios+
These metric close-space punch blanks are used in ejector and punch stations where tool layout is restricted and precise ejection geometry is critical. In automotive and appliance hardware production, they support stable punch penetration and repeatable part release in tight die cavities.
For metal stamping and forming lines that require consistent punch-to-die alignment, the close-space format helps engineers fit multiple punches into dense layouts without compromising support around the shank.
Because this variant is supplied as a hardened punch blank in A2 or M2 tool steel, it is suited to high-cycle duty where wear resistance is needed while maintaining toughness for normal shock loads. Engineers typically select the shank diameter from 2–7 mm and set the working height using the fixed 40–100 mm length to match the press tooling stack-up.
Material & Process Details+
This punch blank series is available in A2 and M2 tool steels. A2 steel is an air-hardening cold-work die steel commonly used for balanced toughness and wear resistance; it is a practical choice when shock loads and frequent regrinds are expected.
M2 steel is a high-speed steel grade (often associated with AISI M2), selected for superior wear resistance under abrasive punching conditions. Depending on shop practice, M2 blanks are typically supplied after hardening and tempering to achieve a working hardness suited to punch edges and guidance surfaces; exact HRC is not provided in the available data.
- Wear resistance: generally stronger with M2 than with A2 in severe abrasion
- Toughness trade-off: high wear steels can be less forgiving under heavy shock—proper die support and alignment remain important
- Heat treatment state: hardened punch blank construction for stable forming performance (heat treatment details beyond “hardened” not specified)
Sizing & Selection Guide+
To select the correct dimension, start with the shank diameter D and choose one of the available sizes: 02, 03, 04, 05, 06, or 07 mm. This diameter must match the punch holder/bushing and the guidance feature of your ejector assembly to prevent wobble and premature wear.
Next, set the overall length L, which is fixed in the range 40–100 mm. Choose the length to match your press tooling stack-up (base plate to punch face), accounting for any spacer heights and the intended working protrusion.
- Match to cavity/core geometry: ensure the selected length allows the punch to reach full penetration depth while keeping adequate engagement for stability
- Fit considerations: the shank diameter should fit the corresponding holder bore with the intended tolerance class; consult your punch bushing or guide specs
- Configurable vs. fixed: material (A2 or M2) and D are variable; L is provided as a fixed-range selection (40–100 mm)
Frequently Asked Questions
When should I choose M2 steel versus A2 for a close-space punch blank?+
Select M2 when your punching process is dominated by abrasion and you need higher wear resistance over long runs. Choose A2 when you want a more balanced toughness/ductility response for typical shock loads in stamping and forming.
This series allows both A2 and M2 material options while keeping the same close-space punch-blank concept.
What shank diameters (D) are available, and how do they affect guidance in the ejector assembly?+
The available D (shank dia.) options are 02, 03, 04, 05, 06, 07 mm. Your punch holder/bushing and guide bore should be sized for the selected diameter to minimize lateral movement.
Correct shank-to-guide fit helps prevent accelerated wear and inconsistent punching depth.
How do I select the proper punch length L for my press tooling stack-up?+
The punch blank length L is provided in the range 40–100 mm. Choose a length that positions the punch face correctly relative to the die surface after accounting for base plates, spacers, and any engagement length in the holder.
Because L is a fixed-range selection (not an open-ended variable), verify your required protrusion and safety clearance before ordering.
What does “close space” mean for punch layout in tight die designs?+
“Close space” indicates a punch blank format intended for tight die layouts, where limited space restricts the arrangement of punch stations. This helps engineers use limited die layout area more efficiently while maintaining functional ejection geometry.
When space is constrained, selecting the correct D and L becomes especially important to avoid interference between adjacent tooling components.
Is this punch blank supplied in a hardened condition, and what impact does that have on performance?+
Yes—this series is described as a Dayton hardened punch blank with hardened punch blank construction for stable forming performance. Hardened punch blanks are intended to improve wear resistance in punch applications.
For precise hardness verification (HRC), you should confirm the actual certificate from the supplied batch, since no specific HRC value is included in the provided data.
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Need Custom Specifications?
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