Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 100438 found under Insert Screw Thread by Astronautics Corporation Of America. The National Stock Number assigned to this part is 5325004621090, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 100438.