Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 454-6 found under Caliper Inside by General Tools Manufacturing Co Llc. The National Stock Number assigned to this part is 5210014349509, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 454-6.