Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TX1027V4-18A found under Screw Close Toleran by Alcoa Global Fasteners Inc. The National Stock Number assigned to this part is 5305014775968, 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 TX1027V4-18A.