Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4 IN X 4 IN X 8 FT GY found under Lumber Non Wood Dimensional by Engineered Plastic Systems Llc. The National Stock Number assigned to this part is 5675014481601, and the Federal Supply Class is 5675 Non-Wood Construction Lumber And Related Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4 IN X 4 IN X 8 FT GY.