CHC-832-16 concealed-head self-clinching studs install permanently in steel or aluminum sheets as thin as 0.062 in. (1.6 mm) and provide a #8-32 thread. The fastener head remains flush and concealed after installation, leaving the opposite side of the sheet smooth. Installation requires a blind hole of 0.290 in. diameter and a minimum depth of 0.328 in., with a minimum edge distance of 0.219 in. These studs are recommended for use in steel or aluminum sheets with hardness up to HRB 70 / HB 125. They support a maximum tightening torque of 18 in.-lb in cold-rolled steel and 4,000 lb pull-out force in aluminum. The nominal shank length is 0.500 in.
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 | CHC-832-16 | CHC-832-16 |
| 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 |
