Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5 8 11 UNC 2A X2 1 2 found under Bolt Machine by Leslie Controls Inc. The National Stock Number assigned to this part is 5306014163974, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5 8 11 UNC 2A X2 1 2.