Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DK04C437BHB found under Screw Cap Socket Head by Align Aerospace Llc. The National Stock Number assigned to this part is 5305013029461, 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 DK04C437BHB.