Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 8645-01001-0001 found under Control Temperature Indicating by Chromalox Corp. The National Stock Number assigned to this part is 6685011020846, 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 8645-01001-0001.