M2 Steel Gas Release One-Step Core Pins Flat-Sided

These M2 steel gas release one-step core pins are used in injection mold tooling to create a compact venting feature in a single locating/ejection component. The flat-sided, anti-rotation head improves stable positioning in the core insert so the gas-release geometry stays aligned through repeated thermal cycles and high cycle counts.

• Automotive & electrical connector molds: Suitable for polymer housings and small connector components where trapped air near deep ribs or thin-gated areas can cause burn marks. The one-step gas vent supports efficient exhaust during molding and helps maintain consistent ejection performance.
• Medical device housings and precision covers: Beneficial when dimensional repeatability and reliable ejection are required. The flat-sided geometry helps prevent rotational drift, supporting repeatable core pin travel and part surface quality.
• Consumer device and appliance inserts: Works well in compact tooling layouts that need integrated venting without adding separate vent hardware, reducing assembly complexity.

Overall, the anti-rotation design and hardened M2-grade construction make this variant well suited for precision cores that demand both stable locating and wear resistance.

This product uses M2 steel identified in the spec as SKH51 hardened steel. SKH51 is commonly correlated with AISI M2 high-speed steel, providing strong wear resistance for small, highly loaded mold components.

• Hardness: The hardened condition is intended for high abrasion resistance; practical use targets the typical M2 hardness range (often around HRC 60–65) depending on final heat treatment.
• Heat treatment: Supplied as a hardened steel pin, typically achieved via quench-and-temper processing to balance hardness and toughness for repeated sliding/contact during ejection and gas-release operation.
• Trade-offs: Higher hardness improves wear life and tip stability, while adequate tempering is needed to avoid excessive brittleness at sharp tips and thin features.

Compared with less hard tool steels, SKH51/M2 grade offers better resistance to fretting and abrasive wear, which is important for precision core pin geometries with venting sections.

Select dimensions by matching the pin’s venting and locating geometry to the core/cavity layout. Start with the shaft diameter D/P (0.8 ~ 13 mm) and the corresponding nominal diameter 1 ~ 13 mm to ensure the pin fits the mold’s bushing/hole size without interference.

• Length (L = 6.5 ~ 60 mm): Choose L to cover the required core engagement depth and full ejection stroke clearance. If your mold stack-up changes, confirm L supports the needed retention while maintaining vent exposure.
• Gas release section: Use DC (0.92 ~ 12.92 mm) and the corresponding N (0.3 ~ 10 / 0.5 ~ 15 mm) family to align vent diameter to your venting target. Note that PC (0.72 ~ 9.92 mm) is applied in specific conditions: when PC = P (PCX).
• Tolerance considerations: The L dimension tolerance is +0.01/0, 0/-0.05, so verify whether you need tight positional control at the ejection stroke end. Where profiles use the flat section setting SVC, ensure the housing keying/anti-rotation clearance supports correct orientation.

Finally, confirm tip gradient control such as tip gradient ±0.005 is consistent with your alignment requirements, especially for precision vent placement.