O1 Tool Steel Positioning Locking Blocks - Angle Configurable

Positioning locking blocks with angle-configurable locking surfaces are used in precision injection mold tooling to create repeatable plate-to-plate alignment and positive part location. In automotive connector and housing molds, the controlled locking geometry helps maintain consistent ejector or cavity plate positioning across build cycles, reducing variation that can translate into flash or dimensional drift.

They are also suitable for medical device housings and insert-molding tooling, where assembly repeatability and stable shut-off alignment are essential for tight tolerances. The O1 tool steel construction provides wear-resistant performance for frequent maintenance and reassembly.

For undercut feature molds and cavity/slider plate stacks, the PL installation style supports stable mounting, while the inlay-height reference supports consistent assembly. The angle (5°) configurability is especially useful when your locking surfaces must match a specific mold build geometry without redesigning the entire plate stack.

This component is manufactured from either O1 tool steel or HPM2T, selected to balance wear resistance and toughness for mold plate positioning hardware.

O1 Tool Steel is a high-performance oil-hardening tool steel commonly used for parts that require good wear resistance with manageable impact toughness. After machining, it is typically quenched and tempered to achieve the target hardness; this state is appropriate for maintaining stable locking surfaces under repeated assembly loads.

HPM2T is an air- or improved performance tool steel variant (often selected for higher wear resistance versus conventional tool steels). Compared to O1, HPM2T is typically chosen when you need improved surface durability in the locking area; the trade-off is that your design may require careful attention to toughness and stress management depending on tempering level.

• Key property goal: wear-resistant locking faces for repeatable alignment
• Heat treatment: quenched & tempered (typical for tool-steel locking components)
• Hardness: set via tempering to maintain surface stability while avoiding brittleness

Correct selection is driven by block height T (10–40 mm), block length L (20, 25, 30, 35 mm), and block width W (A/W ranges depend on width family) in combination with the required locking interface geometry.

Match the block height T to your plate stack spacing so the locking surface engages at the intended inlay height reference during assembly. Choose L based on the available mounting length on the plate/undercut block area; the available discrete options (20/25/30/35 mm) simplify standardization in mold designs.

• Select W (A/W) from the provided ranges: 13–48, 13–58, 18–98, 18–108, 23–128, or 38–128 mm families.
• Use the angle G as specified: 5° to fit the locking surface geometry of the mating component.
• When integrating into core/cavity stacks, allow for machining and assembly clearance so the locking faces seat without binding.

Where your plate-to-block mounting is fixed by the PL installation style, verify that your chosen T/L/W align with fastener clearances and the locating surfaces’ engagement area.