Concealed-head self-clinching standoffs install permanently in steel or aluminum sheets as thin as 0.062 in (1.6 mm), leaving the opposite side smooth and unmarred. They require only a blind milled hole for installation and are compatible with standard presses, satisfying ingress protection requirements by sealing the sheet. The series supports unified thread sizes including 0.190-32 (10-32), as specified for CSS-type fasteners, with installation depth and hole dimensions defined for each thread size. The product requires no additional machining after installation and is suitable for applications demanding clean, sealed mounting surfaces.
These standoffs 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.
Stainless Steel Standoffs
| PennEngineering® | bisco industries | |
|---|---|---|
| Product Category | Posts, Spacers, and Standoffs | Posts, Spacers, and Standoffs |
| Product Number | CSS-032-12 | CSS-032-12 |
| Product Name | Stainless Steel Standoffs - Types CSS, CSOS - Unified | Stainless Steel Standoffs |
| Type & Shape | Standoff; Round | Standoff |
