Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B94.9 found under Tap Thread Cutting by American Society Of Mechanical. The National Stock Number assigned to this part is 5136001776987, 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 B94.9.