Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 75B-1 ITEM 11 AND 12 found under Gear Set Spur Matched by Parker Hannifin Corporation. The National Stock Number assigned to this part is 3020013792081, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 75B-1 ITEM 11 AND 12.