Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BL18065-4-42 found under Insulation Thermal by Thermal Ceramics Inc. The National Stock Number assigned to this part is 1560011349241, 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 BL18065-4-42.