are similar to Round Grippers, but their shape is useful when positive resistance to rotation is required (because they can be mounted against a step to prevent rotation). These serrated grippers are hard, replaceable inserts that 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. The carbide-tipped grippers are economical and impact resistant while providing extra durability. Made in USA.
Square Grippers can be mounted against a step for positive resistance to rotation.
These tapped Square Grippers can be fastened from behind with a 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 90° serrations).
| Material | Heat Treat | Finish | DFARS | RoHS |
| Alloy Steel | Heat Treated with brazed carbide insert | Black Oxide | Yes | Yes |
| A (mm) | B (mm) | C Thread | Thread Pitch (mm) | D (mm) | E (mm) | Serrations | Serration Dimensions |
| 12mm | 10mm | M5 | 0.8mm | 4.8mm | 10.5mm | Fine | 3.2x90° |
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