Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HT4028L7-8 found under Screw Close Tolerance by Alcoa Global Fasteners Inc. The National Stock Number assigned to this part is 5305004861154, 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 HT4028L7-8.