Close Space Punch Blanks - Metric (XNM Coating)

Close-space punch blanks are used in injection-mold tooling and related metal-forming stages where tight punch-and-die clearance limits punch deflection and requires stable forming geometry over long production runs.

• High-cycle insert and carrier tooling: Select these metric blanks when the punch system must fit into compact tool cavities. The close-space punch blank form helps maintain consistent working engagement even in limited die layouts.
• Precision forming for automotive components: When repeated impacts can accelerate wear, the XNM coated surface supports improved wear behavior and reduced friction, helping protect the punch working area.
• Medical device housings and trim operations: For small, controlled features where tolerance stack-up is critical, metric shank diameters enable repeatable assembly fit in punch-and-holder setups.

This variant is suited because the XNM coating targets wear resistance under frictional contact, while the metric shank dimensions support controlled, repeatable placement in punch systems.

The provided specifications focus on sizing and coating (XNM coating) rather than a specific steel grade. As a result, exact material grade, heat-treatment state, and measured hardness (HRC) are not included in the supplied data.

For engineering selection, treat the blank as a coated punch component where the key performance differentiator is surface protection for wear and friction control. In general, coated tool surfaces aim to improve tribological performance during repeated cycles while retaining enough core toughness to withstand punching loads without brittle failure.

• XNM coating: Expected to enhance wear resistance and reduce friction at the contact interface.
• Trade-off consideration: Coatings can improve surface durability, but long-term performance still depends on correct clearance, alignment, and punch-and-die material compatibility.

If you need verification of steel grade (e.g., H13-equivalent) or a target hardness range, request the lot/technical data sheet for this series code.

Use the shank diameter D and the fixed length L to match the punch system requirements. Available shank diameter options are D = 02, 03, 04, 05, 06, 07 mm, while length is fixed at L = 40 ～ 100 mm.

• Select D (shank dia.): Choose the diameter that matches the punch holder or assembly bore for your tool. Correct D selection is critical to achieve a controlled, repeatable fit and to minimize lateral play in close-space layouts.
• Select L (length): Set the working engagement and stick-out by matching L to the tool stack-up (holder height, backing clearance, and the die-set spacing).
• Match to cavity/core requirements: In close-space applications, ensure the geometry and clearance in the die layout are appropriate so the blank can reach the intended forming depth without excessive deflection.

Tolerance and fit are primarily governed by the punch holder interface; if your system uses a standard retention method, keep D aligned to the holder’s specified bore and check clearance for assembly before final build.