ZUFEK
Panel compatibility and insertion acceptance
Supply panel material, thickness, hole preparation and installation direction with the fastener drawing. The retaining feature and panel deform as a system. Define the required installation and retention checks; a correct screw thread does not establish resistance to push-out or rotation in the panel.
Review the route before fixing the quotation
For custom clinch screws & studs, review Multi-Station Cold Heading, Secondary & Precision Operations, CCD Vision & Dimensional Inspection against the drawing and quantity. Identify which features can be produced in the initial shape and which require a separate setup. A change to a functional shoulder, bore, drive or thread can change the proposed route as well as the inspection effort.
The drawing review should resolve retention geometry; panel condition; installation validation. Keep material condition and finishing allowance attached to those requirements. Define the acceptance condition for critical features and approve any proposed dimensional change before comparing samples with the original assembly.
From drawing to approved samples
Provide the panel specification and acceptance tests. Do not assume a custom feature shares the ratings of a branded standard clinch part. Identify the drawing revision, prototype quantity and expected repeat demand. Where the first part is based on an existing sample, separately confirm material and hidden features rather than inferring them from appearance.
The typical sampling lead time, including tooling, is approximately 10–15 days. The schedule is confirmed after drawing review and agreement on the sample specification; material availability, special treatment and inspection requirements can affect the confirmed date. Confirm when the agreed schedule starts in the quotation. Sample approval and repeat-production delivery are separate milestones.