Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PERMARITE MARKII 16 CHARACTER found under Marking Machine Dry Cleaning Lau by Thermopatch Corporation. The National Stock Number assigned to this part is 3510013898921, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PERMARITE MARKII 16 CHARACTER.