CFHA-M4-12 concealed-head self-clinching studs install permanently in aluminum sheets up to 2.4 mm thick, providing a M4 x 0.7 thread. They require a blind hole with a diameter of 4.37 mm and a minimum depth of 7.37 mm, ensuring the opposite sheet surface remains smooth. Installation uses a standard press with a hollow anvil and solid punch, and the stud's flange remains flush with the sheet surface. These studs are designed for use in aluminum sheets with hardness HRB 50 / HB 89 or less, and their clinching profile is compatible with standard PEM® installation tools.
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-M4-12 | CFHA-M4-12 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Metric | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | Metric | Metric |
| Metric | M4 | M4; M4 x 0.7 |
