Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NL523W04-048 found under Insulator Standoff by Abbatron Llc. The National Stock Number assigned to this part is 5970008556225, 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 NL523W04-048.