Prufi
PRU-110Declared input

PEM mounting hole diameter

Sheet metal · Machining

Scope and limits

Selected through-bore diameter against the declared PEM table row; excludes solid cylinders, blind and stepped bores. Missing or unsupported selections receive an INFO unassessed finding with no invalid face highlight. Geometry support requires exactly one solid.

Standards and references

PEM CL:2026

PennEngineering self-clinching nuts bulletin CL

Source scope
Manufacturer mounting data for explicitly declared metric PEM nuts: S/CLS/SP M3/M4/M6 and SS/CLSS/SP M5, supported shank codes 0/1/2. Adds verified M2.5 metric row for S/CLS/SP shank0/1/2 and exact CLS-M2.5-0/-1/-2 catalogue identity selection. No inferred finish suffixes; explicit conflicting selectors rejected. Data pinned to CLcopyright2026 printedCL-5, millimetres.
Implementation in Prufi
PRU-110..113 compare selected through-bore nominal diameter (+0.08/-0.00), local host-plane spacing, center-to-free-edge distance and explicit HRB hardness. M6 SP shank 0 is unavailable. Missing hardness remains unassessed. No installed hardware, thread strength, force, torque-out or conformity verification. PRU-110 explicitly reports unsupported selections as INFO. Geometric mount checks require exactly one solid. Edge clearance is the exact minimum center-to-outer-wire distance on either host plane, conservative for unequal stepped outlines. Exact identities resolve into existing PEM geometry predicates PRU110/111/112 and existing compatibility/process screens; no new rule count. Source product rows and catalogueURLs retained in research package; no licensed standards dimensions guessed.

STEP examples for this check

No public STEP example is currently assigned to this check.

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