Manufactured in accordance with ANSI Specifications B18.2.2 and tapped Unified National Coarse Threads Series Class 2B after centrifugal hot-dip galvanizing. Considered safest to use by utility linemen. Large wrenching surface. Used on all types of threaded bolts and insulator pins. Constructed of high quality steel, hot-dip galvanized. Standard Package: 500 each.