CFHA-632-4 is a concealed-head self-clinching stud designed for permanent installation in aluminum sheets as thin as 0.062 in (1.6 mm), providing a #6-32 thread for reusable mating hardware. It installs using a standard press into a blind hole, leaving the opposite sheet surface smooth and unmarred. The stud is recommended for aluminum with hardness HRB 50 or HB 89 or less. Installation requires a minimum blind hole depth of 0.213 in and a hole diameter of 0.172 in. The part adheres to the PEM® concealed-head stud series, with a clinching profile that ensures secure retention and compatibility with standard installation tools.
These studs ensure permanent mounting in metal sheets as thin as .062 in.
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-632-4 | CFHA-632-4 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Unified | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | English | English |
| Inch | # 6 | # 6 |
