Two Step Taperless Core Pins
Three-diameter cavities without taper-reaming. Flat-sided variants available for rotational orientation control.
Products in This Category
JIS Standard M2 Steel Straight Core Pins - Core Pin | OEM Available
Straight Core Pins in M2 Steel with Core Pin. Engineered for plastic injection molding with custom options. Contact us.
JIS Standard M2 Steel Straight Core Pins - Core Pin | OEM Available
Straight Core Pins in M2 Steel with Core Pin. Engineered for plastic injection molding with custom options. Contact us.
Taperless Two-Step Selection Guide
Combines the most complex stepped geometry (three diameters) with the simplest plate preparation (straight bore). Key considerations:
About Two-Step Taperless Pins
Combines the most complex standard stepped geometry (three distinct diameters) with the simplest plate preparation (straight bore). This combination is the most engineering-efficient option when the cavity requires three internal diameters and the mold has many identical pin positions.
Flat-sided designs provide rotational orientation, which is critical when the three-diameter profile must align with specific mold features such as side actions or lifters.
These pins are widely used in molds running 1M+ cycles. Periodic bore inspection during maintenance ensures consistent retention performance over the mold's lifetime.
Application Scenarios
See how this product type solves real engineering challenges across different industries and applications:
Complex Multi-Diameter Quick-Change Applications
Pain point: Parts requiring three internal diameters need two-step core pins — but traditional tapered versions make pin replacement extremely time-consuming due to rear-loading requirements.
Why it fits: Taperless two-step design combines multi-diameter forming capability with front-loading replacement. This is ideal for molds with complex internal geometries that experience frequent pin wear.
Prototype & Short-Run Multi-Step Molds
Pain point: During product development, internal bore dimensions change frequently between prototype iterations — requiring repeated pin replacements that would be prohibitively slow with tapered designs.
Why it fits: Front-loading taperless design allows rapid pin swaps between iterations. Two-step geometry supports complex development profiles without mold plate rework.
Related Categories
Frequently Asked Questions
Suitable for high-cycle production?+
Can I convert tapered to taperless?+
Engineering Resources
Case Studies
Need a Custom Quote?
Send your specifications — material, dimensions, quantity — and receive a quote. MOQ: 1 piece. Custom dimensions available.