Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ZT99-16-212-4.0 found under Insulation Sleeving Electrical by Zippertubing Co The. The National Stock Number assigned to this part is 5970016632368, 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 ZT99-16-212-4.0.