Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HT4025L3D9 found under Screw Close Tolerance by Alcoa Fastening Systems Ltd. The National Stock Number assigned to this part is 5305011295533, 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 HT4025L3D9.