JIS Standard Hardened Steel Gas Release Straight Core Pins SVC

Gas release straight core pins are used in injection mold toolsets where trapped air or decomposition gases can cause surface defects, burn marks, or voiding around slender core features. The SVC extend-flat section runs to the bottom of the pin, which improves anti-rotation control and helps maintain stable core positioning during repeated ejection cycles.

• Automotive connector and housing molds: Suitable for precision core assemblies that require consistent ejection and tight fit. The hardened steel construction supports wear resistance at high cycle counts, while the built-in gas vent geometry improves evacuation from around the core.
• Consumer electronics enclosure cores: Helps achieve clean molded surfaces where gas management is critical. The SVC flat-to-bottom design reduces positional drift, supporting repeatable core location for fine features.
• Medical device component tooling: Useful when stable, accurate ejection is needed for small, detailed cores. Hardened materials and consistent positioning help maintain dimensional reliability across production runs.

Overall, this variant is engineered for stable orientation, precise ejection accuracy, and effective gas release around straight core elements.

This gas release straight core pin is available in hardened steel grades, selected from SKD61, DH2F, SKH51, and NAK80. These grades are typically chosen to balance wear resistance and toughness for core applications exposed to repeated contact and ejection loads.

• SKD61 (H13 equivalent): commonly used for hot-work and die applications requiring toughness; provides strong wear resistance with good dimensional stability.
• SKH51 (AISI M2 equivalent): higher hardness for improved wear performance, typically at the expense of lower toughness compared with more hot-work oriented grades.
• SKD61/DH2F/NAK80: offered options that let you tune hardness vs. toughness depending on cycle rate, core size, and expected abrasion.

The pins are hardened (“quenched” hardened steel), supporting long-life service and stable performance. Final hardness and exact HRC depend on the selected grade and heat-treatment condition used by the supplier’s process.

Select the pin by matching the shaft diameter and L (length) to the core holder and cavity/core requirements, then confirm gas-release feature dimensions to suit venting needs.

• Shaft diameter (D/P): choose from 0.5–13 mm (nominal diameter No. 0.6–13 mm). Use the provided diameter tolerance of -0.01/-0.02 or 0/-0.005 to maintain fit in the core assembly.
• Length (L): select 15–100 mm or 15–120 mm depending on the design depth of your core.
• Gas release geometry: set DC (0.42–12.92 mm) and PC (0.42–9.92 mm). If DC = D, the configuration DCX applies; if PC = P, PCX applies.
• SVC anti-rotation: SV is the gas-release facet cutting length (2–50 mm or 2–60 mm), while the extend-flat section SV runs to the bottom with the fixed SVC design.

Verify overall pin projection and that the extend-flat anti-rotation feature aligns with the corresponding core bushing or guide to prevent rotational drift.