Designation by WOS Straight Core Pins with Engraving Concave Character

These WOS designation straight core pins are used in injection mold tooling where core support and positive identification are both required, especially during cavity/core set assembly and maintenance. The concave character engraving helps technicians quickly match the pin to the correct core position, reducing the risk of misalignment during rebuilds.

• Automotive electrical connector molds: Use for precise core support in tight-tolerance housings. The engraved designation supports traceable alignment when multiple similar cores are used, while the SKH51 hardening steel construction helps resist wear from repeated cycling.
• Appliance and consumer product housings: Ideal for molds that require stable ejection alignment and clear cavity feature labeling. The concave character engraving improves readability on shop floors without compromising core pin function.
• Medical and electronics subassemblies: Suitable when tooling organization is critical to avoid mix-ups between core sets. The L dimension tolerance (+0.02/0) supports reliable assembly in core configurations.

This core pin uses SKH51 hardening steel, selected for its balance of hardness and wear resistance required in core support components. SKH51 is commonly aligned with high-performance tool steel applications, offering improved durability under repetitive mold contact and sliding loads.

• Hardness & wear resistance: Typically supplied in a hardened condition to provide abrasion resistance at the pin surface.
• Toughness trade-off: As hardness increases, toughness can decrease; SKH51 is chosen to maintain adequate toughness for core pin service while still resisting wear.
• Manufacturing process: Pins are produced with controlled shaft dimensions (including L dimension tolerance) and include the engraved “※Designation by WOS” concave character for durable identification.

For applications prioritizing extreme wear, this hardened steel state is preferred over softer core pin alloys that would wear faster during high cycle counts.

Select pin size by matching D/P (shaft diameter) and L (pin length) to the core support requirements of your cavity/core set. The available shaft diameter range is 0.6 to 10 mm, with nominal diameter values from 0.8 to 10 mm (as specified). Choose L from the provided ranges: 10–100 mm, 10–120 mm, or 10–150 mm, depending on your mold thickness and core travel clearance.

• Diameter tolerance: Shaft diameter tolerance is listed as 0/-0.005 or -0.01/-0.02 (select the variant that matches your core bore/guide fit strategy).
• L tolerance: Maintain L dimension tolerance (+0.02/0) to support stable assembly and prevent excessive play.
• Identification feature: The engraving is fixed as “※Designation by WOS”, so you select by required pin dimensions rather than engraving options.

Finally, confirm that the engraved character count (1 to 5 outer ring characters) does not interfere with adjacent features in your core layout.