DIN Standard SKD61 Steel One-Step Center Pins

One-step center pins like this DIN-standard SKD61 variant are used in injection mold tooling wherever repeatable alignment between moving and stationary components is critical. The compact one-step geometry supports consistent seating during mold build-up, helping reduce shift over repeated clamp cycles.

• Automotive connector and housing molds: Use the 1.5–12 mm shaft range to match locating features on ejector-sleeve and bushing interfaces, improving alignment during high-cycle production.
• Precision consumer electronics assemblies: The available tip/tolerance options (e.g., A/V ±0.02 or ±0.01) support controlled pilot engagement for stable positioning during short-run to medium-run molding.
• Medical device component molds: The wear-resistant SKD61 steel construction helps maintain positional accuracy when molded parts require tight dimensional consistency.

The 4 mm head support (per the product description) improves handling and helps ensure reliable contact at assembly, which is especially valuable when pins are installed and removed for troubleshooting or preventive maintenance.

SKD61 is a hot-work tool steel widely used for mold base components requiring wear resistance and strength under cyclic loading. In practice, it is commonly treated as an H13-equivalent alloy (AISI H13 / DIN SKD61 family) depending on supplier grade details.

• Heat treatment: Typically supplied to a quenched & tempered condition for a balance of hardness and toughness in tooling.
• Hardness & performance trade-off: Quenched & tempered SKD61 can be hardened to maintain good wear resistance against fretting/locating loads, while retaining toughness to resist chipping at the tip under repeated press cycles.
• Surface/after-treatment options: For higher wear or longer life, nitriding or similar surface hardening is often applied in tooling systems; however, specific post-treatment is not stated in the provided data.

Compared with softer steels, SKD61’s hardened condition better resists galling and tip wear, supporting stable mold positioning accuracy over time.

To select the correct center pin dimensions, match both the shaft diameter and the locating engagement geometry to your mold sleeve/bushing holes. This product supports D/P (shaft diameter) = 1.5 ~ 12 mm, with configurable shaft diameter tolerance of -0.01/-0.02, 0/-0.005.

• Choose the shaft diameter and tolerance: Select D/P within 1.5–12 mm, then align the pin tolerance with the compatible sleeve hole diameter tolerance listed as +0.01/0 or H7 and +0.005/0. This controls the fit between pin and sleeve hole.
• Select tip/step style: Pick the required step shape (A–E) and tip shape (No processing, B, C, G, R, T) to achieve the intended pilot contact.
• Verify length and engagement: Use L dimension = 70–200/250/300/400/350/500 mm options to ensure full functional reach for your cavity/core arrangement.
• Tip geometry tolerances: Confirm A/V ±0.02 or ±0.01 plus tip parameters (e.g., A 0.5–2 mm, V 0.5–2.5 mm, R 0.2–0.3 mm) to maintain controlled guidance.

Dimensions listed are configurable within the provided ranges; fixed dimensions apply only to the specific ordering configuration you select.