Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4J50007-234A found under Wedge Assembly Trailing Edge by Composite Shapes Llc Michael B. The National Stock Number assigned to this part is 1560004040016, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4J50007-234A.