M2 Steel Ball Lock Pilot Punches Tapered Tip Heavy Duty Inch

These heavy-duty ball lock pilot punches are used in injection mold tooling and other precision forming/assembly operations where parts must be repeatedly located with minimal lead-in time. The tapered tip geometry supports smooth entry into mating features, helping the ball-lock system quickly establish a stable lock-in position for consistent cavity-to-cavity or insert-to-core alignment.

Common scenarios include automotive connector and housing molds, where the pilot system must maintain alignment under high clamp forces and repeated production cycles. They are also suited for consumer electronics enclosure tooling, supporting rapid, accurate start-up alignment during multi-cavity production. In addition, they fit medical and diagnostic device housings when stable locating helps reduce variance in thin-wall features and downstream assembly fit.

• M2 steel supports dimensional stability during wear cycles
• XNM coating is intended to improve wear resistance at the pilot interface
• Inch heavy-duty construction matches typical die/mold shop standard designs

This series is offered in M2 (and PS4 as an alternative material option). M2 is a high-speed steel commonly associated with strong hardness retention and good wear performance in locating and sliding/contact applications; in practice it balances cutting-tool-style toughness with resistance to abrasive wear.

• M2: selected for durable locating under repeated cycles; expected to provide high hardness for dimensional stability.
• PS4 (comparison): typically chosen when targeting a different balance of wear/toughness or cost/performance; confirm exact hardness and heat-treatment range with the supplier configuration for your build.
• XNM coating: supports reduced wear at the pilot contact surface, improving effective tool life.

To achieve the required hardness for punching/locating performance, the steel is generally provided in a hardened condition with quenched and tempered (or an equivalent hardening route) prior to coating and finishing; final hardness should be validated against the configured material grade.

Select the correct pilot punch size by matching the shank diameter (D) and overall length (L) to the corresponding mold plate and locating feature depths. This series provides D (in) = 37 ~ 125 and point/overall length options in coded inch ranges such as 250 ~ 600, 250 ~ 700, 275 ~ 700, and 300 ~ 700 depending on the configuration.

• Choose D so the shank fits the guide/bushing or mating bore size with the required clearance for smooth movement and repeatable location.
• Select L (and point-length options like B and the specified coded ranges for B & L) to ensure full pilot engagement without bottoming during clamp.
• When using the tapered tip, verify that the taper length provides reliable ball lock-in before full part seating.
• Account for coating thickness effects on fit; specify tolerances/fit class appropriate to your mold guide design.

Dimensions are provided as coded inch ranges; the exact selected configuration (e.g., 250~600 vs. 300~700) is fixed once you choose that option for your cavity/core interface.