This Application is Comprehensive Library / Table of Hot Rolled Structural Steel and Equivalent Grade Table / Chart and Metric / Imperial Hex Bolt and Plain Washer and Spring Washer and Nut and Lock Nut Dimensions, Sizes and Properties Available on Your Fingertip. Also, We have added in this App Weight Calculator where You Can Find the • Weight in Kg and in Lbs. • Circumference in mm, cm, meter, inches and feet • Perimeter in mm, cm, meter, inches and feet • Area in mm², cm², meter², inches² an