CFHA-M3-12 is a concealed-head self-clinching stud for metric threads, designed for permanent installation in aluminum sheets as thin as 1.6 mm. It installs using a standard press into a blind hole with a minimum depth of 4.37 mm and a hole diameter of 3.6 mm, leaving the opposite sheet surface smooth. This stud is recommended for aluminum sheets with hardness HRB 50 or HB 89 or less, and its thread size is M3 x 0.5. The design allows for one-side installation and satisfies ingress protection requirements by maintaining a sealed 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 | CFHA-M3-12 | CFHA-M3-12 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Metric | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | Metric | Metric |
| Metric | M3 | M3; M3 x 0.5 |
