Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5A30057 found under Screw Machine by Triumph Engine Control Systems Llc. The National Stock Number assigned to this part is 5305014471589, 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 5A30057.