Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JH5-019 found under Contactor Main by Hollingsworth John R Co. The National Stock Number assigned to this part is 5945007180164, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like JH5-019.