M2 Steel Ball Lock Pilot Punches Tapered Tip XCD Coating

Ball lock pilot punches with a tapered tip are used to stabilize hole-to-feature registration in inch-based tooling where the pilot must “find” the die opening before full forming starts. In progressive die systems for electrical and automotive connector terminals, the ball-lock pilot geometry helps maintain repeatable centering through indexed feed, while the tapered point provides controlled alignment during part transfer.

• Progressive connector/terminal dies: tapered tip assists initial centering; ball lock improves positional repeatability across stations.
• Fixture and light-duty forming applications: XCD coating supports smoother startup and longer pilot guidance life in routine wear conditions.
• Inspection or pre-form stations: the controlled centering action reduces the risk of misalignment before final forming.

This M2 steel variant paired with XCD coating is suited for light-duty inch applications because it balances wear resistance at the pilot surface with the toughness needed to survive repeated cycles and minor impact during feed transitions.

This series uses M2 high-speed steel as the primary material option. M2 is commonly used for punches requiring a combination of high hardness and wear resistance; depending on supplied heat treatment, typical performance targets are on the order of ~60–65 HRC. The wear surface is further enhanced by an XCD coating, which is intended to improve sliding/smooth startup behavior and reduce abrasive wear at the pilot tip.

• M2 (available): high hardness for pilot wear resistance; trade-off is reduced toughness versus lower-alloy steels if used outside light-duty ranges.
• PS4 (available): an alternate steel option in the series for customers seeking a different balance of cost and performance (exact heat-treatment state is product-configuration dependent).

For consistent dimensional stability, punches are typically supplied in a heat-treated state appropriate for punch service, with coating applied to the finished surface prior to use.

Selection starts by matching the pilot shank diameter (D) to the mating pilot bushing or guide bore in your die set. In this series, D is offered at 0.3750" (37), 0.5000" (50), 0.6250" (62), 0.7500" (75), 0.8750" (87), and 1.0000" (100).

• Choose the coded point length L range based on how far the tapered point must project into the mating lead-in area: options include 250–600 and 250–700, plus an extended option 275–700 (noted as fixed for the configuration with point length B & L).
• Use P to fine-tune engagement: P is available from 0.083 ~ 0.749 in, which affects effective pilot reach and centering engagement.
• Match to cavity/core requirements by ensuring clearance at the shank and sufficient tip projection for controlled centering before full forming.

Because these are precision pilot components, plan for proper press-fit/clearance in the guide system per your die standard; the coded length ranges define available geometry, while fit is governed by your guide/bushing tolerances.