ZUFEK
Provide the panel condition
Specify panel material, thickness, hardness where required and any finish present during installation. Include local geometry and access for the press tooling. These conditions influence how the sheet engages the retention features and how the finished connection can be verified.
Define the hole and retention geometry
Show hole dimensions, preparation and permitted edge condition. Define the stud undercut, serrations or other press-in features on the approved drawing. A resemblance to a standard proprietary part does not establish that the custom version has the same installation requirements or ratings.
Review tooling support and installation
Explain how the panel and stud will be supported during pressing. Avoid applying an installation condition copied from a different component without review. Agree sample assembly requirements so the proposed fastener and the actual panel can be evaluated together.
Specify acceptance beyond appearance
Where relevant, define push-out, torque-out or other functional checks with methods and criteria. A flush-looking head does not by itself prove retention. The quotation should distinguish dimensional inspection of the stud from qualification of the pressed panel assembly.
Specification example
For a custom stud in a coated panel, state whether coating occurs before or after installation. That sequence can change the fit and the inspection conditions and should be resolved before production.
RFQ checklist
- Panel material and thickness
- Hole preparation and dimensions
- Stud retention features
- Press support and sample assembly
- Functional retention tests
Use the RFQ preparation checklist, then submit your drawing for review. For acceptance requirements, see quality planning.
General guidance only. Material properties, tolerances, standards and manufacturing feasibility must be verified for the actual specification. This article does not establish a product performance guarantee.