CHA-M5-12 is a concealed-head self-clinching stud designed for permanent installation in aluminum or steel sheets as thin as 1.6 mm, providing a reusable M5 x 0.8 thread. It installs using a press with a blind milled hole and leaves the opposite side of the sheet smooth and unmarred, supporting ingress protection requirements. The stud is recommended for use in materials with hardness HRB 70 / HB 125 or less. Minimum blind hole depth is 7.93 mm, with a hole diameter of 5.6 mm and a minimum distance from hole center to sheet edge of 5.6 mm. The part is part of the CHA series, which shares these installation and performance characteristics.
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 | CHA-M5-12 | CHA-M5-12 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Metric | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | Metric | Metric |
| Metric | M5 | M5; M5 x 0.8 |
