5-Pack Bolt Kit, 12-Point Head S/S
1/2" UNF x 4.250" UHL With 9/16" Socket Head

To compliment ARP "bulk" 5-pack chrome moly and stainless steel fasteners we have assembled matching groups of nuts. They, too, come in convenient 5-pack skin cards. Take your pick from stainless steel and black oxide finished standard nuts or stainless steel Nyloc and cad plated Nyloc self-locking nuts.