CSOS-M4-25 is a stainless steel concealed-head self-clinching standoff designed for permanent installation in metal sheets as thin as 1.6 mm, providing a threaded bore for mating hardware while leaving the opposite side smooth and unmarred. It installs using a blind hole with minimum depth and requires a HAEGER® or PEMSERTER® press with specified anvil and punch tooling. The standoff meets ASME B1.13M, 6H thread standards and is passivated for corrosion resistance. It is recommended for use in aluminum or steel sheets with hardness up to HRB 70 / HB 125. The product line supports metric threads and is compatible with standardized installation 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-M4-25 | CSOS-M4-25 |
| Product Name | Stainless Steel Standoffs - Types CSS, CSOS - Metric | Stainless Steel Standoffs |
| Type & Shape | Standoff; Round | Standoff |
