Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TSQ257-7-PART-8 found under by Keihin Seiki Co Ltd. The National Stock Number assigned to this part is 5331014220696, 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 TSQ257-7-PART-8.