Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 157H2-3571 found under Switch Toggle by Kurz Instruments Inc. The National Stock Number assigned to this part is 5930000502703, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 157H2-3571.