Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M3-1750-S1R found under Transducer Motional Pickup by Columbia Research Laboratories Inc. The National Stock Number assigned to this part is 6695012403580, 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 M3-1750-S1R.