Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 09391406 found under Gage Twist Drill And Drill Rod by J Blackwood And Son Ltd. The National Stock Number assigned to this part is 5210002211893, 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 09391406.