Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B397-04063 found under Link Hoisting by Gs Industries Inc. The National Stock Number assigned to this part is 3940015016919, and the Federal Supply Class is 3940 Blocks Tackle Rigging And Slings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B397-04063.