Double-Stepped Tapped Punches (TiCN Coating)

These bolt-fixed double-stepped, tapped punches are designed for injection mold and die sets where consistent hole-forming performance is critical and tooling swaps must be fast. The separated guide section and double-step geometry help maintain control of the effective cutting length, which is useful after edge regrinding when punch height and engagement must remain repeatable.

They are well suited for narrow pitch layouts in connector and terminal tooling, because the no-collar design reduces interference between adjacent features. The TiCN-coated working surfaces support longer life in abrasive or higher-cycle punching, helping stabilize cycle-to-cycle hole accuracy.

In multi-cavity or family molds that require frequent maintenance, the bolt-holding construction enables quick punch replacement and height adjustment without redesigning the entire punch plate. Different tip shapes (round, rectangle, oblong, double-flatted round, radius rectangle) allow matching to tapped hole geometry used in downstream assembly components.

• Use where narrow pitch prevents collar-based designs
• Choose when quick replacement after regrind is required
• Prefer TiCN when wear resistance extends maintenance intervals

The provided configuration specifies TiCN coating on the punch cutting and contact surfaces to improve wear resistance. TiCN (titanium carbonitride) is commonly used to lower abrasive wear and help maintain dimensional stability of the cutting/tapping zone under repeated punching.

However, the input data does not list the underlying base steel grade, heat treatment condition (e.g., quenched & tempered or nitrided), or target hardness (HRC). As a result, hardness/toughness trade-offs for the substrate cannot be stated from the supplied specifications.

• Coating focus: TiCN for improved wear performance
• Heat treatment: Not provided in metadata
• Hardness (HRC): Not provided in metadata

When selecting for heavy-duty tapping loads, confirm the steel grade and heat treat via the product spec sheet to ensure the substrate toughness matches your punching pressure and edge chip risk.

Selection starts by matching the punch shank diameter and the tapped/tip geometry to your mold cavity/core requirements. For this series, D (shank diameter) is in the range 5 ~ 25 mm, with a specified tolerance of +0.005/0 and m5. Ensure your punch-retention bore and any locating features accommodate this fit without excessive clearance or binding.

Next, choose the tip dimensions based on the tapped hole size and the required stepped length. The P (tip dimension) range is 0.8 ~ 9 mm, and V (second-step tip diameter) is 0.83 ~ 9.01 mm. The overall L is offered in 40 ~ 80 mm and also 40 ~ 100 mm depending on variant—confirm that your plate thickness and guide engagement fit within the chosen L range.

• B (tip length): select within the available variant bands (e.g., 2~45, 2~60, 2~25, 2~30 mm)
• F (tip end to second step R): 5~45, 5~60, or 4.4~45 mm depending on variant
• LC (full length alteration): choose the alteration range that fits your regrind strategy (e.g., 35~79.9 up to 42~99.9)

Because the series is double-stepped, verify step geometry (F, LC, and corner R = 0.15 mm) to maintain the intended effective cutting/tapping length after regrinding.