Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 566D284GR1 GR2 found under Lead Screw Handling by Bechtel Technical Services Inc. The National Stock Number assigned to this part is 4470011200461, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 566D284GR1 GR2.