SKD11 Steel Punches with Key Grooves Single-Stepped Shank

These SKD11-equivalent punches with a single-stepped shank are used in progressive and compound injection and forming tooling where repeatable punch positioning is critical. The key-groove mounting supports stable shank location, reducing lateral shifting during cycling and helping maintain forming accuracy across production runs.

• Automotive electrical connector and terminal housings: ideal for small-diameter, precision openings where consistent punch-to-die alignment prevents flash and deformation. The stepped shank plus key groove improves retention under repeated loading.
• Appliance and industrial enclosure components: suited for multi-cavity tool sections requiring standardized shank fit. The provided m5 tolerance reference supports controlled assembly for repeatable forming results.
• Medical device housings and inserts: commonly used when stable forming geometry is required for tight tolerances. Choose the optional WPC surface treatment to support wear performance in demanding cycles.

The punch is made from SKD11 steel (SKD11 equivalent), a tool-steel grade commonly selected for punch and die applications requiring wear resistance. In equivalent terms, SKD11 is referenced as H12-type performance in many tooling comparisons; actual hardness depends on final heat treatment.

• Heat treatment state: provided offerings include surface treatment options (None or WPC), intended to improve wear behavior in operation. The exact bulk hardness (HRC) and quench/temper schedule are not specified in the provided data.
• Wear vs. toughness trade-off: SKD11 is selected to balance edge wear resistance with sufficient toughness for punch work. Surface treatment (WPC) can further shift the performance toward longer wear life, particularly under abrasive or high-cycle conditions.
• Comparable variants: when choosing between None and WPC, the decision typically targets whether your application needs enhanced surface wear resistance rather than changing the base alloy.

Select dimensions by matching the shank and key-groove geometry to your punch retainer, guiding plate, and die opening requirements. Start with the shank diameter D (available: 6, 8, 10, 13, 16 mm) to ensure the punch seats properly in the tooling.

• Shank fit tolerance: the shank diameter D tolerance is specified as +0.005/0, m5. Use an m5-compatible counterbore/guide feature to maintain stable positioning and avoid play that can increase flash.
• Tip geometry: choose tip shape (A, D, E, G, R) and match Tip dimension P (2 ~ 10 mm), Tip length B (available as L or S), and corner radius R within the listed ranges for your forming profile.
• Overall length: pick L from the provided ranges (e.g., 50–80, 50–100, 60–100, 40–80, 40–100) and verify LC (35–79.9 or 35–99.9) for your press stroke and retention stack-up.
• Key groove position T: ensure T (5.1–80 or 5.1–100 mm) aligns with the tooling key feature for positive location.