200pcs 5/16-18 Hex Bolts 1-1/2" for DIY & Construction - Free USA Shipping

Made from Alloy�2024-T4,�these cap screws have the strength of mild steel yet are only one-third the�weight.�They're�nonmagnetic and resistant to corrosion caused by�weather.�All are fully threaded with a Class 2A thread�fit,�minimum Rockwell hardness of�B40,�and minimum tensile strength of�37,000�psi.�Screw length is measured from under the�head.