Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PK22B found under Rotor Pickup Tachom by The Electric Tachometer Corp. The National Stock Number assigned to this part is 2990011390530, 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 PK22B.