Gas Release One-Step Core Pins Flat-Sided with SVC

Gas release core tooling uses this one-step gas-release core pin to vent trapped air and volatiles from tight mold cavities. The integrated vent section enables a controlled path for exhaust while the flat-sided head maintains stable positioning during repeated opening and closing.

• Automotive connector and housing inserts: In multi-cavity layouts where core pins must resist tip wobble, the extended flat section (SVC) supports consistent alignment to reduce flash around the core interface.
• Electrical insulator and cable-entry molds: For parts that trap gases at fine features, the one-step vent geometry (DC/ND sized per application) helps improve part surface quality without redesigning the core.
• General precision core pin applications: Hardened steel variants offer dependable wear resistance under frequent ejection cycles where dimensional stability of the core pin is required.

The flat-sided + SVC configuration is specifically suited for anti-rotation and locating stability, improving gas-release performance consistency across production runs.

This series is offered in multiple hardened steels to match different mold wear and toughness needs: SKD61, DH2F, SKH51, and NAK80.

• SKD61 (H13-equivalent class): typically chosen for balanced toughness and hot-work wear resistance in ejection-intensive environments.
• SKH51 (AISI M2-equivalent class): generally selected when higher wear resistance is prioritized for smaller-diameter pins and longer production cycles.
• NAK80: often used as a corrosion-resistant alternative for molding conditions where surface integrity is critical; trade-offs may include lower high-temperature wear performance compared with tool-steel options.
• DH2F: used where a hardened tool-steel balance of machinability and service performance is desired for core pin applications.

All variants are hardened steel constructions for repetitive ejection wear. Exact hardness values (HRC) and specific heat-treatment recipes (e.g., quench & temper, nitriding) are dependent on the selected material grade and configuration.

Selection starts by matching the pin shaft diameter (D/P) to the corresponding core pin bore. This product supports D/P = 1–13 mm, with shaft diameter tolerance of -0.01/-0.02 and 0/-0.005, so verify whether you are targeting a press fit or close running clearance.

• Overall length (L): choose from 16.5–100 mm, 16.5–120 mm, with additional listed ranges; use the provided L tolerance of +0.02/0 or 0/-0.1 to maintain stack height alignment.
• Gas-release geometry: set DC (gas-release section diameter) in 0.92–12.92 mm and SV (facet cutting length) from 2–50 / 2–60 / up to the listed variants. When DC = D, DCX is applied; confirm this rule against your core feature.
• Locating and anti-rotation: the flat section length is fixed as SVC (extended flat reaches the bottom), so the pin bore depth must accommodate the SVC extension.

For tip features, validate tip shape (No processing, B, C, G, R, T), tip angle (K), and gradient/taper tolerances (e.g., ±0.01 to ±0.015) to ensure proper seating in the core pocket.