Product Specification Hex Tap Bolts, also known as fully-threaded hex cap screws, or machine bolts. Hex bolts are one of the most common fasteners and can be used in many applications. The 6 sided head makes them easy to install using a standard wrench or socket set. System of Measurement : Inch Thread Diameter : 5/16 Inch Screw Length : 1 Inch Thread Coverage : Full Thread Thread Count : 18 Material : High Quality 18-8 (304) Stainless Steel Finish : Plain Finish Package Included 25 x Hex Head Cap Bolts Warranty MewuDecor hardware has the highest quality on the market. Buy with confidence. Money back or exchange guarranteed.