Center Dowel Punches for Heavy Load - Metric, XNP Coating

These metric center dowel punches are used in injection mold tooling and heavy-duty die/fixture builds where repeatable dowel-hole registration is critical. In production-grade molds, they help locate plates, guide components, and mold halves so that assembly alignment remains stable over long cycle counts.

• Automotive connector and housing molds: where repeated closure and high clamping consistency can wear alignment interfaces, the XNP-coated contact surfaces support more consistent positioning at the dowel interface.
• Industrial enclosure and appliance housings: the centered tip profile supports accurate workpiece location during stack-ups of ejector plates, slides, or bolted assemblies, reducing the risk of drift during repeated service.
• Medical device tooling (non-sterile housings or fixtures): when tight alignment is required to maintain downstream part fit, the metric shank diameters (10–25 mm) and defined point lengths help engineers match cavity/core registration requirements.

The multiple tip shapes and defined metric sizing ranges make this variant suitable for heavy-load tooling that prioritizes stable dowel hole positioning and durability at sliding/impact contact points.

The provided specifications for this product focus on geometry and coating rather than a named steel grade. Accordingly, the material discussion below centers on the XNP coating function and how it affects performance under repeated contact.

• XNP coating: applied to improve surface durability in areas with regular rubbing or contact, supporting wear resistance for consistent dowel registration over repeated cycles.
• Heat treatment: the input data does not specify hardening state (e.g., quenched & tempered, nitrided) or resulting HRC hardness, so these values must be confirmed from the manufacturing datasheet for this series.
• Trade-offs: coatings enhance wear behavior, but long-term accuracy depends on maintaining a sound substrate and managing load cycles; without substrate hardness data, engineers should verify expected wear and toughness for the intended clamping force and duty cycle.

If you share the steel grade or datasheet for series 250301835097, we can map it to an equivalent (e.g., H13/AISI equivalents) and specify hardness/toughness expectations more precisely.

Select a dowel punch by matching its metric shank diameter D (10, 13, 16, 20, 25 mm), point length L1 (13–19 mm or 19–25 mm), and overall length L (80–130 mm) to your mold assembly layout. The goal is to ensure the tip fully enters/engages the dowel-hole depth while the shank provides stable guidance without bottoming prematurely.

• Match engagement depth: choose L1 based on the target dowel-hole depth and required registration overlap during mold closure.
• Match assembly stack height: use L (80–130 mm) to accommodate your plate thicknesses, spacer stack, and any clearance needed during alignment.
• Tip geometry: select the tip shape (H, J, K, L, N, O, R, V, X, Y, Z) that best fits your dowel-hole entry profile and alignment needs.
• Dimensional features: confirm P (4–18 mm), W (4–6 mm), and the R range (0.2–5 to 0.2–12.5 depending on configuration) so the tip radius/lead geometry does not interfere with hole chamfers.

Because the input does not list explicit tolerances, verify punch-to-hole clearance requirements for your dowel system before finalizing.