Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X783A found under Insulator Standoff by Central Lab Mfg Co. The National Stock Number assigned to this part is 5970003560550, 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 X783A.