Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12-71688 found under Thread Cutter Die Head Hand by Curtistoledo Inc. The National Stock Number assigned to this part is 5136001997681, and the Federal Supply Class is 5136 Taps Dies And Collets Hand And Machine. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 12-71688.