Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SC5310-0021-27 found under Insert Screw Thread by Drs Icas Llc. The National Stock Number assigned to this part is 5325008354569, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SC5310-0021-27.