Serrated Round Grippers are hard, replaceable inserts used to provide additional holding force and/or wear resistance when installed in a fixture. They are designed to slightly penetrate the workpiece to significantly increase gripping force, rather than relying on static friction alone. These counterbored grippers are ideal for blind-hole installation and surface mounting. Made in USA.
Counterbored grippers are useful whenever fastening from behind or the side is not possible. Fasten with a standard socket-head cap screw. Grippers can be recess-mounted in a flat-bottom hole, or surface mounted to use as a rest pad. When grippers are installed in a hole, they should project 50 to 100% of serration height for maximum effectiveness (serration height is .062" on grippers with .125" x 90ยฐ serrations).
| Material | Heat Treat | Finish |
| M-2 Tool Steel | Heat Treated Rc 60-62 | Black Oxide |
| A Diameter (Inch) | B (Inch) | C Mounting Screw | Serrations | Serration Dimensions |
| 5/8" | 3/8" | #8 | Fine | 0.125x90ยฐ |
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