These are 1/2 diameter custom square u bolts we supplied to a construction company in urgent need, at small quantity of just 6 pieces. With a rush service we were able to ship these custom parts within 4 days from order confirmation. They incorporate approximately 4 inches of 1/2-13 thread, with the inside width at 4-1/2 inches and inside depth at 18 inches. Material certs and stainless steel hex nuts were supplied as well per the customer's request. Our internal part number for these custom square u bolts is USB050288-I.
