Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 135 14 13 found under Insulator Feedthru by Viking Technologies Ltd. The National Stock Number assigned to this part is 5970002850268, and the Federal Supply Class is 5970 Electrical Insulators And Insulating Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 135 14 13.