304 Stainless Steel Rivet nut:Our screws nuts are made of high-quality 304 stainless steel, they have a good strength of extension, corrosion resistance, superior rust resistance and excellent oxidation resistance, which can ensure long time using. Multipurpose Functions:The knurled nut makes it easier to insert into the work piece.and many different kinds of material, such as threaded insert for metal plate,wood, plastic, fiberglass and so on. Wide Application:Stainless Steel rivnut tool sets are great for professionals, amateurs, landlords, handymen, repair men, women, woodworking, construction, plumbing, HVAC and so on. They also worked well for printed projects. Use on sheet metal and wood. A variety of sizes can meet the maximum of requirement for you Reasonable Design:The rivet nut is knurled, the thread is flat and deep, the pitch is even, the surface is smooth without burrs, easy to fix, and the anti-skid effect is good. Rivet Nut Size:50pcs M6 nutsert metric rivnut assortment. We contains various and complete models for your riveting needs. With strong metallic luster and precise thread, surface. Easy to Use:The threaded rivet inserts are easy to install, has good friction and bite force,Can be easily installed in many different kinds of material including steel, plastic and fiberglass. Just drill a hole according to the size of the rivet nut mounting hole, insert the rivet nut, and tighten the locking nut with the rivet tool.