Jinghong Precision Mold

Why the right ejector pin matters in fastener tooling In screw and fastener cold heading, the ejector pin (also called the KO pin) is one of the hardest-working components in the die set. After every punch cycle, it must push the formed blank out of the die cavity cleanly — without sticking, galling, or wearing prematurely. A pin that is off by even a few microns can cause inconsistent part quality, longer downtime, and higher tool replacement costs. That is why header-machine operators do not just buy "a pin." They buy precision, material grade, and a supplier who can hold tight tolerances batch after batch. What makes Grade H9 ejector pins a reliable choice At Jinghong Mold, our H9 grade precision ejector pins are engineered specifically for screw header machines and cold-heading dies. The H9 material grade is selected for its balanced combination of: High wear resistance under repeated impact and sliding contact Good toughness to resist chipping in high-cycle production...

  When manufacturing high-precision fasteners, automotive components, or medical devices, the durability of your cold heading tooling determines your entire production efficiency. A fraction of a millimeter off in a punch pin or ejector pin can cause tool breakage, line downtime, and costly quality claims. At Jinghong Mold (景渱模具) , we solve these technical challenges. Based in Dalang, Dongguan, China, we bring 26 years of specialized expertise in producing high-durability punch pins, ejector pins, and custom mold components engineered to -0.01mm tolerance . Technical Specifications: Mold Components Comparison To help engineers and procurement managers select the right tooling material for their specific mechanical environment, we provide full material customization: Material Grade Hardness (HRC) Key Properties & Advantages Primary Applications ASP60 (Powder Steel) 67 – 69 Extreme wear resistance, high red hardness, zero burr machining High-cleanliness medical co...