Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3M612 found under Block Meter by Metco Inc. The National Stock Number assigned to this part is 3433010500811, and the Federal Supply Class is 3433 Gas Welding Heat Cutting And Metalizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3M612.