Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M42530008A40000 found under Screw Cap Socket Head by Fastenal Company. The National Stock Number assigned to this part is 5305016674339, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M42530008A40000.