Concealed-head self-clinching studs install permanently in steel or aluminum sheets as thin as 1.6 mm, leaving the opposite side smooth and sealed. CFHC-type studs are designed for use in steel or aluminum sheets with hardness up to HRB 70 / HB 125. They require a blind hole with a minimum depth of 5.6 mm and a hole diameter of 5.4 mm for M5 x 0.8 threads. Installation is performed using a press with compatible tooling, ensuring the flange is flush with the sheet surface.
These studs ensure permanent mounting in metal sheets as thin as 1.60mm.
The fastener head is locked securely in a blind, milled hole and is able to handle substantial loads. The concealed-head feature allows the side of the sheet opposite installation to remain smooth.
Sheet preparation only requires a milled blind hole to the recommended minimum depth. Center-cutting end mills for hole preparation are available from PennEngineering. Installation of the concealed-head studs and standoffs is simple using a hollow anvil and solid punch. Place the head of the fastener in the hole and insert using any standard press. Displaced sheet metal flows smoothly around the head into the undercut.
| PennEngineering® | bisco industries | |
|---|---|---|
| Product Category | Studs | Studs |
| Product Number | CFHC-M5-20 | CFHC-M5-20 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Metric | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | Metric | Metric |
| Metric | M5 | M5; M5 x 0.8 |
