Core Pins

Overview

Core pins—also known as insert pins—are precisely engineered rods used in molding and die casting processes (including injection molding and high-pressure die casting). Their main function is to create internal cavities, holes, or intricate features within molded or cast parts. These components are engineered to endure high temperature and pressure loads while maintaining tight dimensional accuracy.

Core Pins

Key Features

Precision Machined & Versatile Types
Available in various forms—straight, tapered, stepped, threaded, vented, cooling, ejector, or custom profiles—core pins accommodate a wide range of internal geometries and ejection requirements.
Premium Materials & Surface Treatments
Commonly crafted from H13 tool steel (DIN 1.2344), stainless steel, carbide, or copper alloys, and enhanced with heat treatments and coatings like PVD, nitriding, or DLC. These treatments significantly boost wear resistance, thermal stability, and reduce sticking in the mold.
Enhanced Wear Resistance & Thermal Performance
Leading manufacturers utilize advanced coatings and high-performance heat treatments to deliver core pins with hardness up to 57 HRC. These treatments also improve thermal conductivity, reducing downtime and scrap rates.
Improved Mold Life & Easy Maintenance
By positioning core pins in high-wear or tight-tolerance areas, you protect the main mold body. When worn, pins can be replaced quickly and cost-efficiently—reducing maintenance time and preserving production continuity.
Dimensional Fidelity & Consistency
Core pins help maintain precise tolerances and ensure feature accuracy across production cycles. This precision reduces part variation and boosts reliability in high-volume operations.