Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HJB1 found under Die And Tap Set Thread Cutting by Jcorps. The National Stock Number assigned to this part is 5136000434739, 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 HJB1.