ISO Double-Claw Clamp · Nut Closure
Two opposing hooked blocks are tightened by a through-bolt
Material | SS304 |
|---|---|
Connection | Clamp |
Specification | 3A,DIN, SMS |
Product overview
Vacuum clamping construction
ISO Double-Claw Clamp · Nut Closure: Two opposing hooked blocks are tightened by a through-bolt
ISO flange fastening
ISO-K connections use clamp fasteners, while ISO-F connections use nuts and bolts. In the illustrated clamp connection, the claws engage behind the flange edges and the threaded fastener draws the faces together. A separate centring ring and O-ring sit between the flange faces.
Technical specifications
Product series
- Clamping interface
- ISO vacuum (Product series)
Construction & finish
- Manufacturing process
- CNC Lathe Machine (Body surface and manufacture)
- Surface roughness
- Ra≤0.8 (Body surface and manufacture)
ISO-KF Double Wall Clamp
Applies to ISO vacuum double claw clamps across listed flange sizes; verify bolt thread (B) and flange grip thickness (C).

| Size | A | B (Bolt thread) | C |
|---|---|---|---|
| KF63ISO | 50 | M8 | 20-33 |
| KF250ISO | 53 | M10 | 20-33 |
| KF320ISO | 85 | M12 | 26-46 |
Dimension symbols
- C
- flange clamping thickness range
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