Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LE500D4-6 found under Screw Machine by Lawrence Engineering And Supply Inc. The National Stock Number assigned to this part is 5305009998181, 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 LE500D4-6.