June 5, 2022 Shawn Henry Uncategorized Material is 6061 aluminum. Screw has a 1″ diameter head (slotted) with 1/4-20 thread. Nut has a 1″ diameter head, .490 diameter barrel with 1/4-20 thread through. Aluminum Nut and Screw Set with 1/4-20 ThreadPart # 10502 $8.31 each Go to Order Form 0