AN12 bolts have a 3/4-16 thread with a 3/4" shank diameter. All AN12 bolts have a 1.0938" thread length, regardless of grip length. This thread length is designed to accommodate a full-height lock nut plus one AN960 washer. Sold individually, nuts and washers sold separately. Torque AN12 bolts to 192-208 lb-ft with AN365 or AN310 full-height nuts or 108-125 lb-ft with AN364 or MS21042 half-height nuts. UHL: Under Head Length (also known as Full Shank Length or Overall Length not including bolt head) AN bolt nomenclature can be confusing. Please take a look at our page on Identifying AN Bolt Sizes.