CFHC-832-8 concealed-head self-clinching studs install permanently in steel or aluminum sheets as thin as 0.062 in. (1.6 mm) to provide reusable #8-32 threads. The fastener's head remains flush and concealed on the back side of the sheet, ensuring a smooth, unmarred surface and satisfying ingress protection requirements. Installation requires a blind hole with a diameter of 0.179 in. and a minimum depth of 0.290 in., and is performed using a press with specified HAEGER® or PEMSERTER® tooling. These studs are made from stainless steel and passivated, suitable for sheet materials with hardness up to HRB 70 or HB 125. The design conforms to NAS63540/4 specifications when ordered with the full part number.
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 | CFHC-832-8 | CFHC-832-8 |
| 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 |
