Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 991SB1 found under Wedge Drum Clamp Wire Rope by Vme Americas Inc. The National Stock Number assigned to this part is 4030001253007, and the Federal Supply Class is 4030 Fittings For Rope Cable And Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 991SB1.