Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K660039-11 found under Tang Locking Aircra by Kaman Aerospace Corporation. The National Stock Number assigned to this part is 1560000827766, 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 K660039-11.