Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 243 31830 1 found under Fitting Assembly Cockpit by Hi Shear Corporation. The National Stock Number assigned to this part is 1560005700186, 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 243 31830 1.