CFHA-832-8 is a concealed-head self-clinching stud designed for permanent installation in aluminum sheets as thin as 0.062 in. (1.6 mm), offering a #8-32 thread and a shank length of 0.328 in. The stud installs using a standard press into a blind hole with a minimum diameter of 0.290 in. and a minimum depth of 0.328 in., leaving the opposite sheet surface smooth and unmarred. It is recommended for use in aluminum sheets with hardness HRB 50 or less and meets NAS63540/4 specifications. Installation requires no access to the back side, supporting strict ingress protection requirements. The fastener's clinching profile and material compatibility are consistent with the CFHA series.
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-832-8 | CFHA-832-8 |
| 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 |
