Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PSS22300-4-6-6 found under Adapter Test by Aar Parts Trading Inc. The National Stock Number assigned to this part is 4920002045581, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PSS22300-4-6-6.