Kreg KHC-RA Right Angle Clamp: Keep Pocket-Hole Joints From Shifting

When a pocket screw starts pulling, a loose 90° joint can creep before the head seats. One hand can hold the boards or control the driver, but doing both accurately is awkward. The Kreg KHC-RA Right Angle Clamp (model KHCRA) uses one prepared pocket hole as an anchor: a steel pin enters that hole while a swiveling pad presses the opposite face. The joint stays positioned while an adjacent pocket-hole screw is driven. This is a specialized assembly tool for standard Kreg pocket holes, not a general corner clamp or a way to fix poor joinery.

The pocket-hole pin anchors the joint before the screw moves it

The most useful buying reason is the clamp's relationship to the joint you have already prepared. Kreg specifies a steel pin sized for a standard 3/8-inch Kreg pocket hole. Insert the pin into one pocket hole, place the swiveling pad on the mating board, then close the handles. The clamp pulls the two parts together at 90° without requiring a second clamp to reach around the outside corner.

That matters during cabinet, shelf, face-frame or box assembly. A pocket screw enters at an angle, so its first bite can shift the mating part if nothing resists the pull. With the KHC-RA occupying one pocket hole, an adjacent hole remains available for the driver. You can secure the joint before removing the clamp, reducing the handoff between alignment and fastening that often causes movement.

The tool does not drill the hole and it does not square a badly cut part. The pocket holes must already be made, the mating surfaces must fit, and a square is still useful when the project demands verified geometry rather than temporary positioning.

A 5-inch reach covers more than thin cabinet parts

Kreg lists a 5-inch (127 mm) reach and clamping capacity up to 3 1/8 inches (79 mm). The reach lets the pad contact the far side of a deeper assembly than a compact pocket-hole clamp could manage. Kreg describes uses ranging from 1/2-inch plywood to 2x4 boards, which makes the clamp relevant to both cabinet parts and thicker workshop projects.

Those numbers describe the clamp's geometry and maximum opening, not a promise that every shape inside that envelope will be stable. A narrow contact point cannot distribute pressure across a long panel. Wide cases, long rails or parts prone to twisting may still need a second clamp, a square or a support block. The advantage is access around a prepared pocket-hole joint, not broad glue-up pressure.

Automaxx saves setup, but pressure still needs judgment

Automaxx automatically adjusts to material thickness as the handles close. That reduces repeated jaw setup when a project moves between thinner panels and thicker stock. Kreg also provides a pressure-setting screw, so the user can increase or decrease clamping force for the material and joint.

Automatic thickness adjustment is not automatic pressure judgment. Soft wood, thin plywood and finished faces can mark or deform if pressure is excessive. Kreg instructs users to open the handles fully between moves so the mechanism can reset; skipping that step can undermine the convenience Automaxx is meant to provide. Keep the swiveling pad clean, start with moderate force, and let joint fit—not maximum squeeze—determine the setting.

Steel construction suits repeated assembly work, while padded grips make the closing motion easier on the hand. Those details support shop use, but they do not change the need to inspect the pin, pad and work surface before clamping a visible face.

Choose it for prepared pocket-hole joints, not every 90° corner

The KHC-RA is a strong fit for someone who regularly assembles cabinets, shelving, face frames or boxes with standard Kreg pocket holes and wants one hand free for the driver. Its pin uses an existing hole to locate the clamp, its swiveling pad accommodates the mating face, and its reach gives it room around thicker assemblies.

Skip it for Micro-Pocket holes: Kreg states that the pin fits the standard 3/8-inch pocket hole, not the smaller Micro-Pocket format. It also makes little sense for dowel, biscuit or plain butt joints without a prepared pocket hole. One hole is occupied until the first adjacent screw is seated, and large assemblies may need more support. Buy it when pocket-hole fastening is already your workflow and joint movement during the first screw is the recurring problem—not simply because the project contains a right angle.