5/16"-18 (9/16" × 7/16") Brass Cap Nut, Plain Finish (Inch)

The 5/16"-18 brass cap nut is designed to provide a smooth, finished appearance while covering and protecting exposed threads. Manufactured from solid brass, it offers good corrosion resistance and electrical conductivity for light‑duty applications. With a 9/16" diameter by 7/16" height cap and a plain finish, this cap nut is ideal for decorative, electrical, and general‑purpose inch‑series assemblies where appearance and functionality are important.