Close Space Punch Blanks - Metric XNP Coating

Close-space punch blanks are used in progressive and fine blanking die sets where punch-to-matrix clearance is tightly controlled to maintain part accuracy. The compact blank geometry supports efficient die packaging, making it suitable for high-density tooling in automotive terminals and connector components.

In high-cycle forming operations, the XNP coating is selected to help reduce surface wear and maintain stable punch performance over repeated strokes. This makes the variant a strong fit for appliance and electronics enclosures where dimensional consistency is required across long production runs.

• Automotive connector and terminal dies: limited clearance benefits from the close-space geometry and metric configurations.
• High-cycle sheet metal forming: XNP coating supports improved wear resistance for consistent output.
• Compact die layouts: fixed length range simplifies integration into existing die blocks and tooling stacks.

The provided specification set confirms a metric close-space punch blank with an XNP coating, but does not state the base steel grade or heat-treatment condition (e.g., quench & temper, nitriding, or pre-hardened state). As a result, the exact hardness in HRC and the base-material toughness/wear trade-off cannot be verified from the supplied data.

Practically, XNP coatings are selected to improve wear resistance at the working surface and to resist degradation under repeated forming cycles. Coating performance typically shifts the tool’s wear behavior toward longer service life, while the underlying steel primarily governs toughness and resistance to cracking under load.

• Coating: XNP (wear-focused surface protection for stable high-cycle use)
• Heat treatment: Not specified in the input data
• Hardness (HRC): Not specified in the input data

Selection starts with the shank diameter D and the fixed punch length L. Available shank diameter options are D = 02, 03, 04, 05, 06, 07 mm, while the punch length is fixed to L = 40 to 100 mm.

To match your mold or die, choose D to fit the guide bushing or retention bore that supports the punch shank. Then set L so the punch engagement length and protrusion meet the required forming depth while maintaining clearance for the die stack.

• Match D to the guide/support diameter for stable alignment.
• Match L to the required stroke working height and die block thickness.
• Tolerance/fit: verify that your receiving bore clearance accounts for manufacturing tolerances and any coating thickness where relevant.
• Configurable vs. fixed: D is selectable from the provided discrete options; L is available across 40–100 mm.