Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4 40X1 8SKTSETRDHD32 030 found under Setscrew by Allen Mfg Co. The National Stock Number assigned to this part is 5305008007261, 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 4 40X1 8SKTSETRDHD32 030.