Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RTR-0043 found under Holder Clutch by Bauer Compressors Inc. The National Stock Number assigned to this part is 2990016338335, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RTR-0043.