CFHC-M3-10 concealed-head self-clinching studs install permanently in aluminum or steel sheets as thin as 1.6 mm, providing M3 x 0.5 internal threads. They require a blind hole of 3.4 mm diameter and a minimum mounting depth of 4.37 mm. Installation is performed using a press with a hollow anvil and solid punch, ensuring the head remains flush with the sheet surface and the opposite side remains smooth. The stud is made from stainless steel with a passivated finish, suitable for sheets with hardness up to HRB 70 or HB 125. The design supports ingress protection by sealing the mounting hole.
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 | CFHC-M3-10 | CFHC-M3-10 |
| Product Name | Concealed-Head Studs - Types CHA,CFHA,CHC,CFHC - Metric | Concealed Head Studs |
| Attachment | Pressed | Threaded |
| Shape | Round | |
| Design Units | Metric | Metric |
| Metric | M3 | M3; M3 x 0.5 |
