CFHA-832-12 is a concealed-head self-clinching stud designed for permanent installation in aluminum sheets as thin as 0.062 in. (1.6 mm), with a #8-32 thread and a shank length of 0.125 in. The fastener installs using a standard press into a blind hole, leaving the opposite sheet surface smooth and unmarred, and meets ingress protection requirements for sealed environments. It is recommended for aluminum sheets with hardness HRB 50 / HB 89 or less. The stud has a minimum installed thickness of 0.041 in. and is designed for a minimum blind hole depth of 0.290 in. and a hole diameter of 0.172 in. Installation requires compliance with specified edge distance and spacing guidelines.
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-832-12 | CFHA-832-12 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Unified | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | English | English |
| Inch | # 8 | # 8 |
