Punches with Key Grooves Single-Stepped Shank

Key-groove punches with a single-stepped shank are used to provide positive keyed mounting and repeatable alignment inside punch and die sets. The built-in groove maintains orientation through frequent press cycles, which reduces risk of hole position shift in high-volume forming lines.

• Automotive and electronics progressive dies: When producing stamped features that require tight pitch control, the keyed shank helps keep the punch working axis consistent across many stations; select powdered high-speed steel or SKH51 for higher wear performance.
• Appliance and metal fabrication tooling: In tools running at elevated contact loads, the stepped shank supports stable guidance, while WPC or HW coating options improve surface durability against abrasion.
• Multi-cavity layout tools: For interchangeable punch stations, dimensional consistency and the specified shank diameter with m5 tolerance ( +0.005/0 ) supports dependable fit into locating bushings or retainer blocks.

Choose this variant when keyed positioning and wear-resistant surfaces are critical to dimensional stability.

This punch family is offered in powdered high-speed steel, SKH51, and SKD11 equivalent grades, supporting different toughness-to-wear trade-offs for punching applications. SKH51 is a high-performance high-speed steel typically aligned with AISI M2 in performance class, favoring wear resistance for edge-intensive operations.

• Powdered HSS: Generally provides excellent uniform carbide distribution, supporting strong wear resistance under cyclic loading.
• SKD11 equivalent: A tool steel commonly selected where higher toughness and shock resistance are needed; it may show a different wear/toughness balance compared with high-speed steels.

Surface treatment options include HW coating and WPC to improve abrasion and reduce galling at the punch-workpiece interface. While the exact target hardness and heat-treatment cycle are not specified in the provided data, these grades are typically supplied in a hardened condition appropriate for punch tooling, with the selected coating further boosting wear performance.

To select the correct keyed single-stepped punch, match the shank diameter D and overall geometry to the locating features in your punch holder or retainer. The shank diameter range is 3 ~ 16 mm, with a specified tolerance of +0.005/0 and m5 fit condition—ensure your holder/bushing bore is designed to accept this class for stable guidance without excessive play.

• Tip and corner geometry: Confirm tip dimension P (1 ~ 10 mm), W (1 ~ 5 mm), and corner radius R (0.15 mm). Select tip shape from A, D, E, G, R to match your cutting profile.
• Lengths: Choose B (tip length) from L, S, X and set the L (40 ~ 70 mm) and LC (27 ~ 79.9 / 99.9) (as your assembly requires).
• Key groove position: The key groove position T is specified across ranges (e.g., 5.1 ~ 80, 5.1 ~ 100), so align T to your keyed mounting feature.

When ordering variant configurations, use the provided alteration parameters (e.g., PC 0.5 ~ 5, WC 0.8 ~ 2) to maintain stack-up consistency across stations.