Machined to a tolerance finer than standard CNC practice — reserved for joint designs or code requirements that call for accuracy beyond what typical CNC drilling delivers.
| Structural Principle | Finer positional and surface tolerance than standard CNC machining |
| Typical Positional Accuracy | Tighter than ±0.05 mm standard CNC tolerance |
| Best Suited For | Highest-criticality welded joints, demanding code requirements |
| Governing Codes | Project-specific tolerance specifications beyond TEMA minimums |
Precision tolerance is reserved for the highest-criticality joint designs, regardless of structural type or material.
Standard CNC machining already achieves tight, repeatable tolerance suitable for the vast majority of applications. Precision machining goes further, for the specific minority of projects where the joint design or client specification calls for tolerance beyond typical CNC capability.
Typically driven by a specific project specification, an unusually demanding joint design, or a code requirement tighter than TEMA's standard minimums — not something specified by default.
It can be specified for the entire hole pattern or selectively for specific critical rows, depending on what the design actually requires — confirm scope with our engineering team at enquiry stage.
Every enquiry is checked against governing code, material compatibility and manufacturing feasibility before a quote is issued. Use our product, material, grade and standards guides to freeze the RFQ — then confirm with engineering.
Send your diameter, material, pressure class and quantity — we'll confirm thickness and price.