Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4000001 found under Screw Machine by H And E Venture Llc. The National Stock Number assigned to this part is 5305004219220, 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 4000001.