M2 Steel Block Core Pins No Tip with Flange Engraving

These block core pins (no-tip with a flange and WOS engraving) are used in large mold and die-casting tooling where repeatable alignment between mold blocks, inserts, and supporting components is critical. The flange head provides secure seating and helps prevent micro-shifts that can translate into flash or mismatch at parting lines.

• Automotive die-casting molds: Suitable for locating core blocks and related die-casting components, where stable guidance and durable wear resistance are required during high-cycle production.
• Industrial housing and bracket tooling: The no-tip geometry helps reduce unwanted contact during assembly and alignment, improving reliability when blocks are mated under tight tolerances.
• Multi-block core systems: The engraved designation (※Designation by WOS) supports traceability across revisions and maintenance cycles, particularly when multiple cores share similar geometries.

This variant supports multiple steel options depending on the wear and hardness target: SKH51 and NAK80. SKH51 (AISI M2 equivalent) is a high-speed tool steel often selected for higher hardness and wear resistance; the provided hardness range for this configuration is 61–64 HRC, which improves resistance to fretting and contact wear at the flange and guidance areas.

NAK80 is commonly chosen for toughness and dimensional stability in mold tooling; the supplied hardness range for the NAK80 option is 37–43 HRC, typically trading lower wear resistance for better impact tolerance.

• Heat treatment state: hardened performance is indicated by the HRC ranges; select the steel grade and corresponding heat treatment to match your cycle life and contact conditions.
• Trade-off: higher HRC (SKH51) favors abrasive/contact wear; lower HRC (NAK80) favors toughness when alignment forces and shock loads are present.

To select the correct block core pin, match the flange thickness H = 4–6 mm and the flange-thickness change HC = 2–5.9 mm to the locating features in your mold block. Then select the overall length L = 10–50 mm so the pin engagement length is sufficient for guidance, but does not bottom out and cause stress concentration during closure.

• External shape size (W): choose W = 1, 2, 3, 4, or 5 mm to fit the available counterbore/profile in the block interface.
• Number of outer ring characters: the product supports 1–5 characters for the WOS designation. This is a traceability feature and should be chosen for readability and assembly identification needs, not for mechanical fit.
• Tolerance/fit: use the selected H, HC, and L to maintain consistent seating; any mismatch in flange thickness or engagement length can lead to core shift and potential mismatch at mating surfaces.