10PCS M4 M5 M6 M8 Carbon Steel Jack Nut Zinc Plated Hollow Rivet Nut Blind Rivet Nut Threaded Insert for Thin Iron Sheet Plastic

Short Description:10PCS Carbon Steel Jack Nut Set – Reliable Threaded Insert for Thin MaterialsThese M4 M5 M6 M8 jack nuts (hollow rivet nuts / blind rivet nuts) are made of zinc-plated carbon steel for strong holding power and corrosion resistance.Perfect for: Thin iron sheets, plastic, PVC, wood, and other soft or thin materials where traditional nuts won't work.How it works: Insert into pre-drilled hole, tighten with a screw or rivet tool – the nut expands like a flower petal on the back side, creating a secure, reusable thread.Package includes: 10 pcs (assorted sizes M4, M5, M6, M8)