Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4W23431-102A found under Brace Truss Rib by Essner Precision Manufacturing L. The National Stock Number assigned to this part is 1560004643150, 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 4W23431-102A.