Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HT308-4-11 found under Screw Close Toleran by Satair A S. The National Stock Number assigned to this part is 5305008911730, 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 HT308-4-11.