CFHA-M5-20 concealed-head self-clinching studs install permanently in aluminum or steel sheets as thin as 1.6 mm to provide reusable M5 x 0.8 threads while leaving the opposite side smooth. They require a blind hole of 5.6 mm diameter and a minimum mounting depth of 7.93 mm, and are designed for installation using a press with a hollow anvil and solid punch. These studs are recommended for use in materials with hardness not exceeding HRB 70 / HB 125. The head is fully concealed after installation, enabling sealed, ingress-protected designs.
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 | CFHA-M5-20 | CFHA-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 |
