M2 Steel Ball Lock Pilot Punches - Round Tip

These M2 steel ball lock pilot punches are used in injection or press-fed die tooling where precise part-to-die positioning must be maintained over high repetition cycles. The ball-lock locating feature helps maintain alignment by resisting pilot shift during repeated punch-and-return motion.

• Progressive stamping/blanking: Use the round tip to start punches consistently and reduce initial misalignment when transferring features between successive stations.
• Automotive and industrial connector housings: Apply as pilot locators to stabilize feed strip or insert positioning, improving repeatability of molded or stamped components that demand tight feature registration.
• Medical device housing components (component-level die sets): The hard, wear-resistant construction supports long-running production where dimensional stability and consistent locating are critical.

Choose a variant with the appropriate shank diameter (D: 37–125 in) and point/length coding (e.g., 250–600, 275–700, 300–700) to match the press/die pilot interface geometry and preserve correct engagement depth.

This series offers M2 steel (and PS4 as an available option). M2 is a high-speed steel known for strong wear resistance and good toughness, making it suitable for pilot components that experience repeated sliding/contact during die actuation.

• Heat treatment (typical): HSS pilot tools are commonly delivered in a hardened state for tooling life; the intended performance is hard enough to resist micro-wear at the locating tip.
• Hardness / trade-offs: Higher hardness improves abrasion resistance and maintains pilot geometry, while toughness must be balanced to avoid chipping under impact loading.
• Material comparison: PS4 is offered as an alternative material choice; select based on your target wear profile and any supplier-specific processing for your production environment.

Because pilot punches primarily manage positioning and contact wear, the material’s hardened wear behavior and dimensional stability over repeated cycles are the key selection drivers.

To select the correct pilot punch dimensions, first match the shank diameter (D) to your die/punch guide interface. Available D values range from 37 to 125 (in per the provided spec), so confirm your mold or press component bore/guide size before ordering.

• Point length / overall length coding: Choose the correct length code based on the available ranges: 250–600, 250–700, 275–700, or 300–700 (as listed under point-length/length coded inch variants).
• Geometry matching: The round tip is meant to achieve controlled starting engagement; select the length so the ball-lock portion and tip engagement depth provide stable locating without bottoming.
• Tolerance & fit: Use your die pilot clearance requirements to ensure consistent alignment over cycles. If your application is sensitive to registration, maintain the standard fit between the pilot and mating bore/guide and verify engagement depth during die tryout.

If you need different length options for the same D, keep D fixed and select the corresponding coded length range that matches your cavity/core or die station requirements.