Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54311-133C found under Adapter Connector by Aeroflex Services Limited. The National Stock Number assigned to this part is 5935008247588, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 54311-133C.