The CSOS-M5-20 is a stainless steel concealed-head self-clinching standoff designed for permanent installation in metal sheets as thin as 1.6 mm. It provides a threaded M5 x 0.8 internal bore and requires a blind hole with a minimum diameter of 7.93 mm and a minimum depth of 5.6 mm for installation. The fastener ensures a smooth, unmarred surface on the opposite side of the sheet and satisfies strict ingress protection requirements. Installation is accomplished using a PEMSERTER® press or equivalent, with compatible tooling available. The part is intended for use in sheets with hardness up to HRB 70 or HB 125. All concealed-head standoffs in this series feature the PEM® two-groove trademark and meet ASME B1.13M, 6H thread specifications.
These standoffs 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.
Stainless Steel Standoffs
| PennEngineering® | bisco industries | |
|---|---|---|
| Product Category | Posts, Spacers, and Standoffs | Posts, Spacers, and Standoffs |
| Product Number | CSOS-M5-20 | CSOS-M5-20 |
| Product Name | Stainless Steel Standoffs - Types CSS, CSOS - Metric | Stainless Steel Standoffs |
| Type & Shape | Standoff; Round | Standoff |
