Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 79331F91 ITEM H found under Insert Flexible Coupling by Parker Hannifin Ltd. The National Stock Number assigned to this part is 3010013241321, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 79331F91 ITEM H.