PRODUCT MATERIAL: Rivet nuts are made of high quality Carbon Steel, strong rust and corrosion resistant for a long time use, non faded, anti-oxidation, healthy and lead-free, high strength, non-deforming Great Design:Our rivet nuts are knurled, with flat and deep threads, which are easy to fix and have good anti-skid effect,making them easier to handle and install,Rust resistant and strength enough to apply in many kinds of heavy duty materials including sheet metal. Specs: Material: Steel-Yellow Zinc Thread Size: 5/16-18 UNC Grip Range: .027-.150 Benefits: Splined Body The splined body provides increased torque-to-turn resistance over conventional non-splined inserts. Large Flange Provides a large bearing surface which increases push-out performance. Wide Grip Range The range of product within the L series provides a placing capability in material... Quality Material,The rivet nuts are made of carbon steel with zinc plated surface, which makes the rivet nut have high hardness and strong corrosion resistance, you no longer need to worry about them rusting and breaking during installation Rivet Nut Carbon & 304 Stainless Steel Flat Head Rivnut Nutsert Insert Unc 6 32 To 1 2 13 Flat Head Rivnut Assortment Hero image 0 of CERPXFF-Rivet Nut 5/16"-18 UNC 80Pcs Yellow Zinc Plated Finish Flat Head Rivnut Threaded Insert Nut Knurled Body (Yellow 5/16"-18), 0 of 4 Wide Range of Uses: Our rivet nuts are usually used for various metal plates, pipelines and other manufacturing industries, and are widely used in electromechanical and light industrial products (such as automobiles, aviation, railway, refrigeration, instruments, furniture, switch, elevator and decoration Should you have any concerns regarding our products, please do not hesitate to tell us and we will respond within 24 hours Yellow Zinc Corss Nut Steel Flat Head Pre Bulbed Split Plusnut Rivnuts Slotted Body Blind Rivet Nut - Alloy Steel Galvanized Pre-Bulbed Cross Rivet, Flat Head Trifold Rivet Nuts