Jack nuts M5 x 25mm plain carbon steel petal expansion

Jack nuts are threaded inserts designed to anchor fasteners into thin metal, hollow walls, and other materials. This pack contains 16 pieces of M5 x 25mm expansion nuts made from plain carbon steel with a petal design for secure grip.

The petal expansion mechanism distributes load across a wider surface area when installed, reducing stress on thin substrates and preventing pull-through. Carbon steel construction provides durability and corrosion resistance suitable for both indoor and outdoor use.

Installation is straightforward: push the nut into the pre-drilled hole, then tighten the bolt to expand the petals against the material. No special tools required, making this suitable for construction, machinery, automotive repair, and general fastening applications across metal, plastic, and wood.

These nuts maintain a secure hold over time without loosening or corrosion issues, even in demanding environments. They’re commonly used where traditional fastening methods would fail due to thin or hollow materials.

Choose M5 x 25mm if your application requires this specific thread size and length. Check your hole diameter and material thickness before ordering to ensure compatibility.