Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8528-40(K found under Thermometer Self Indicating Digi by Cole Parmer Instrument Co. The National Stock Number assigned to this part is 6685014689019, 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 8528-40(K.