Ball Lock Pilot Punches - Tapered Tip, Light Duty, Inch

Ball lock pilot punches with a tapered nose are used in injection and stamping tooling to locate dies and keep repeatable part positioning across press cycles. In progressive and transfer die setups, the tapered geometry helps the punch enter the mating bushing smoothly, reducing start-up force while preserving stable alignment when the die opens and closes.

• Automotive connector and small housing dies: Light-duty taper guidance supports consistent alignment for thin-wall cavities where misregistration quickly affects fit.
• Electronics enclosure components: Repeatable inch locating helps maintain hole and feature positional accuracy during high-cycle runs.
• General industrial brackets and covers: The ball-lock style reduces locating variation, supporting dependable die-to-die repeatability.

This specific variant is suited because it combines a tapered tip for controlled entry with an inch locating format, and it is offered in M2 / PS4 steel options for hardened wear resistance in tooling environments.

These pilot punches are specified in either M2 or PS4 steel. M2 is a high-speed steel commonly selected for wear resistance and good performance under repeated cutting-edge-like contact in tooling; it is typically hardened and tempered to balance hardness with toughness to avoid brittle failure under shock loading.

• Expected hardness/toughness balance: Higher hardness improves wear resistance, but excessive hardness can reduce impact toughness during press interruptions.
• PS4 option: Provided as an alternative steel for tooling use; choose based on the hardness/wear profile required for your duty cycle and alignment forces.

In practice, selecting between M2 and PS4 focuses on the wear vs. toughness trade-off for your press speed, lubrication, and how forcefully the tapered tip is driven into the mating guide system.

To select the correct pilot punch, match the shank diameter D and the point/working length coded to your pilot station requirements. Available D (in) sizes are 0.3750, 0.5000, 0.6250, 0.7500, 0.8750, and 1.0000 (coded 37, 50, 62, 75, 87, 100).

• Choose length L / point length range: Variable point length B & L is coded as 250–600 or 250–700 depending on configuration; another option provides 275–700 with fixed D/point-length coding.
• Confirm point length C: C is available in coded ranges of 250–600, 250–700, or 275–700.
• Check P dimension: The P dimension is 0.083 ~ 0.749; ensure this matches the mating bushing/plate geometry so the lock engages correctly.

Because these are locating components, maintain your die-to-bushing clearance and consider standard machining tolerances in the pilot bore to prevent binding while still achieving repeatable registration.