Package Included: 25 PCS X 5/16- 18 UNC Carbon Steel Flat Head Rivet Nut Specification Thread Size:5/16- 20 UNC Head Diameter: 0.552 inch Head Hight: 0.039 inch Total Length: 0.728 inch Grip Range: 0.04-0.16 inch About Carbon Steel Flat Head Rivet Nut A rivet nut is a tubular nut with internal thread which can be installed within seconds from one side of the work. Mathews Harmonic Stabiliser | Clickers Archery APPLICATIONS: Rivet nuts are widely used in automotive, aerospace, railways, swithces, instruments, elevators, furniture, electronics, and general industrial applications where a strong threaded connection is required in thin materials such as sheet metal or plastic, to provide a strong and permanent threaded anchor point GREAT DESIGN: River nuts are installed using a special tool that pulls the rivet nut into the material, deforming its shank to create a secure anchor; It provides a strong and load-bearing thread in thin materials without the need for access to both sides. 5/16-18 Nylon Insert Hex Lock Nuts, Bright Finish,304 Stainless Steel... Flat Head Rivet Nut Rvet Nuts, 50 Pcs 5/16"-18 UNC, Carbon Steel Flat Head Rvnut Threaded Rivet Nuts These rivet nuts are knurled having flat and deep thread, which are easy to fix and anti-slip effective. 255pcs Rivet Nuts Assortment Kit - #8-32, 10-24, 1/4"-20, 5/16"-18, 3/8 QUALITY MATERIAL: The rivet nuts are made of high quality Carbon steel which provides rust resistant and good strength to apply in various kinds of heavy duty materials including sheet metal, steel, aluminum, plastic, fiberglass and so on PACKAGE CONTENTS: 25 pcs rivet nuts 5/16-18 size with yellow zinc-plated finish, Neat appearance, No Burrs DETAILS: Thread size 5/16-18; Head Diameter 0.552 inch; Total Length 0.7 inch; Drill Hole Size 0.429 inch Thanks for your support Contact Us: If you have any questions when using, please feel free to contact us by Amazon message.