The CHA-832-16 is a concealed-head self-clinching stud designed for permanent installation in steel or aluminum sheets as thin as 0.062 in. (1.6 mm), providing a reusable M6-32 thread. It requires a blind hole of 0.290 in. diameter and a minimum mounting depth of 0.289 in., with a minimum distance from the hole center to the sheet edge of 0.185 in. The stud features a flush, concealed head that leaves the opposite sheet surface smooth and unmarred, making it suitable for applications requiring ingress protection. Installation is accomplished using a press with a hollow anvil and solid punch. This part is recommended for use in materials with a hardness of HRB 70 / HB 125 or less. It meets NAS63540/4 specifications when ordered under that designation.
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 | CHA-832-16 | CHA-832-16 |
| 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 |
