Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number J1303-4 found under Cover Telephone Jac by Jan Hardware Mfg Co Inc. The National Stock Number assigned to this part is 5935009324518, 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 J1303-4.