Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1289508-101 found under Insulator Bushing by Oil States Industries Inc. The National Stock Number assigned to this part is 5970002979362, 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 1289508-101.