Precision Taperless One-Step Core Pins - Configurable Shaft Diameter

These precision taperless one-step core pins are used for mold core locating in injection molding toolsets where repeatable positioning is critical. The compact one-step geometry provides predictable engagement without relying on a second step, helping maintain stable alignment through assembly and operating cycles.

• Automotive connector and housing molds: Use the configurable shaft diameter range D/P = 0.8–16 mm to match specific core bore layouts, supporting tight press-to-core positioning and consistent part-to-cavity alignment.
• Medical device component tooling: The controlled tip diameter options A/AAC = 0.4–5 mm and stable locating behavior help reduce positional variation that can affect thin-wall features and assembly fit.
• General consumer and electrical enclosure molds: The shorter, one-step contact design is suited when space constraints limit multi-step locating features while still requiring reliable core centering.

Hardened steel variants (SKH51 or SKD61) support tool life under normal wear and repeated press-fit cycling.

Material options are SKH51 and SKD61 hardened steels, selected to balance wear resistance and toughness for repeated locating contact. In practice, SKH51 is commonly chosen for higher wear resistance applications, while SKD61 is widely used where a stronger toughness-to-hardness balance is required for tool durability.

• SKH51: Typically treated as a high-speed steel grade (often referenced as an AISI M2–class equivalent) and supplied in a hardened state for good resistance to abrasion at the pin tip.
• SKD61: Commonly referenced as an H13-class equivalent, suitable for quenched-and-tempered performance where shock resistance during molding cycles is important.

Hardness is not specified in the provided data, so select the exact heat-treatment level offered by your supplier configuration to meet your wear vs. toughness requirements. For best results, verify hardness at the contact region (tip/step) because it strongly affects galling, rounding, and long-run positional repeatability.

Select dimensions by matching the locating interface between the pin tip/step and the corresponding core bore or locating pocket in the tool. This series is designed for configurable shaft diameter, so start with the required shaft size and then confirm the tip geometry that performs the actual locating.

• Shaft diameter (D/P): Choose within 0.8–16 mm to fit the core bore without over-sizing. Confirm any bearing or guidance length requirements using F = 12–28 mm (and variant-dependent FC when F must be shortened).
• Tip diameter (A/AAC): Select from 0.4–5 mm to achieve stable core centering at the intended engagement depth.
• Length (L): Use the available ranges such as 6.5–100 mm, 6.5–120 mm, or up to 6.5–150 mm depending on the configuration; verify the L tolerance = 0/-0.05 mm, +0.01/0 for stack-up control.

Because the tip and step shapes are selectable (e.g., first step shape B/C/D/E; tip shapes B/C/G/R/S/T; step type taper width C ranges), ensure the chosen step/angle (e.g., K = 21–60° or 1–45° configurations) matches the mating pocket form for repeatable press fit and alignment.