Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ASTROQUARTZ Q-18 found under Thread by Stevens J P And Co Inc. The National Stock Number assigned to this part is 8310012692209, and the Federal Supply Class is 8310 Yarn And Thread. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ASTROQUARTZ Q-18.