Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JH3 001 30 found under Ring Holder Electri by Hollingsworth John R Co. The National Stock Number assigned to this part is 5977003789204, and the Federal Supply Class is 5977 Electrical Contact Brushes And Electrodes. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like JH3 001 30.