Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D5055 PIECE 3C found under Setscrew by Roth Tank Co. The National Stock Number assigned to this part is 5305012228601, 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 D5055 PIECE 3C.