CFHC-M4-6 concealed-head self-clinching studs install permanently in steel or aluminum sheets as thin as 1.6 mm to provide reusable M4 threads, leaving the opposite side smooth and sealed. The stud requires a blind hole with a minimum diameter of 4.03 mm and minimum depth of 7.37 mm for installation using a press with compatible HAEGER® or PEMSERTER® tooling. It is designed for use in materials with hardness up to HRB 70 / HB 125 and meets ASME B1.1 and ASME B1.13M thread standards with a passivated finish. Installation displaces sheet material to form a secure, flush flange without requiring access to the back side.
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-M4-6 | CFHC-M4-6 |
| 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 |
