The CSOS-M6-25 is a concealed-head self-clinching stainless steel standoff designed for permanent installation in steel or aluminum sheets as thin as 1.6 mm. It features a metric M6 x 1 thread and a nominal length of 25 mm. Installation requires a blind hole with a minimum diameter of 9.9 mm and a minimum depth of 9.13 mm, ensuring the flange remains flush with the sheet surface. The standoff allows the rear side of the sheet to remain smooth and unmarred, supporting ingress protection requirements. It is recommended for use in materials with a hardness of HRB 70 or HB 125 or less. The fastener is installed using a press with specified anvil and punch tooling.
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-M6-25 | CSOS-M6-25 |
| Product Name | Stainless Steel Standoffs - Types CSS, CSOS - Metric | Stainless Steel Standoffs |
| Type & Shape | Standoff; Round | Standoff |
