CHA-M4-12 is a concealed-head self-clinching stud designed for permanent installation in aluminum sheets as thin as 1.6 mm, providing an M4 x 0.7 thread. It requires a blind hole with a diameter of 7.37 mm and a minimum mounting depth of 7.35 mm. The stud installs using a standard press, leaving the opposite sheet surface smooth and unmarred. It is recommended for use in aluminum sheets with a hardness of HRB 50 or less. The fastener is designed to retain its hold without additional nut or weld, and its clinching profile conforms to PEM® concealed-head specifications.
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-M4-12 | CHA-M4-12 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Metric | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | Metric | Metric |
| Metric | M4 | M4; M4 x 0.7 |
