
The joint is sensitive to hole size and sheet hardness. Push-out and torque-out are set by how much sheet material fills the undercut, so the three variables are hole size, sheet hardness and press force. Of these, hole size is the one that drifts in production, and it is the usual cause of a nut that turns after assembly.
Material: Carbon Steel / Stainless Steel. It is pressed into a prepared hole with a clinching press, working from one side.
Control hole size with a gauge rather than by drill nominal, and re-check push-out whenever the sheet supplier or gauge changes.
| Material | Carbon Steel / Stainless Steel |
|---|---|
| Surface Treatment | Zinc-plated / Stainless steel finish |
| Standard | GB/T 90.1 (acceptance), customer drawing |
| Installation | pressed into a prepared hole with a clinching press (single side) |
| Typical substrate | cold-rolled steel, stainless and aluminium sheet 0.5–3 mm |
| Key inspections | push-out, torque-out, face flushness |
Push-out and torque tests are sampled per lot, with failure load recorded.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.