Close Space Punches Metric P=0.8

This metric close-space punch is used in injection mold tooling where very limited clearance is required between punch and die features, such as thin-wall insert and cap molds. The fixed P dimension 0.8 helps maintain predictable press-fit behavior, improving alignment during high-cycle operation.

In automotive connector and terminal housing molds, the punch supports stable positioning of small forming elements (lugs, clips, or localized embosses) so the die cavities maintain dimensional accuracy. Multiple shank diameter D options (02–07) allow engineers to select a fit compatible with the corresponding bushings and guide systems.

For medical device housings and components, tight clearance presswork benefits from consistent tool geometry that reduces drift over repeated strokes. The available lengths L = 40–100 mm also help match tool stack-up and die layout without redesigning the entire assembly.

• Best suited for tight clearance forming where press-fit stability is critical.
• Choose D to match bushing fit requirements and guide alignment.
• Select L to suit mold tool stack and stroke alignment.

The provided product metadata does not specify a steel grade, hardness (HRC), or heat-treatment state. Therefore, the material performance characteristics (wear resistance, toughness trade-offs, and exact temper/nitriding requirements) cannot be stated from the given data.

For close-space punches, engineers typically select tool steel based on expected contact stress, abrasion, and whether the parting surfaces see sliding vs. primarily press-fit loading. If you need to confirm a specific grade for sourcing, request the lot datasheet or material certificate for series code 250301827975.

• Missing fields: steel grade, quench/temper condition, nitriding, and target hardness (HRC).
• Action: verify material and heat treatment before final tool design to ensure the required wear/toughness balance.

Selection is driven by three dimensions: D (shank diameter), L (length), and the P dimension. For this variant, P is fixed at 0.8, so you choose only the matching D (02, 03, 04, 05, 06, 07) and the working length L in the range 40–100 mm.

To match the mold cavity/core requirements, first confirm the bushing and guide system interface that the shank will seat into. Pick the D size that corresponds to your intended fit (press-fit tolerance usually depends on hole/bushing tolerances and expected thermal growth during cycling).

Next, set the tool stack-up: choose L so the punch reaches the required forming/blanking depth without bottoming or overextending under your press stroke. If you are designing around a standardized tool length, confirm whether your assembly uses fixed reference surfaces or adjustable spacers.

• P: locked at 0.8 for consistent close-space performance.
• D: choose from 02–07 to match guide/bushing fit requirements.
• L: choose 40–100 mm to align tool stroke and die layout.