Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HZTL428529P1 found under Screw Cap Socket He by Abb Ltd. The National Stock Number assigned to this part is 5305013356970, 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 HZTL428529P1.