Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4017 found under Screw Cap Hexagon Head by Fwd Seagrave Holdings Lp Div Sea. The National Stock Number assigned to this part is 5305000216257, 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 4017.