Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B61-171-8599 found under Link by Hurst Industries Inc. The National Stock Number assigned to this part is 4240011035203, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B61-171-8599.