Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3-300-957-01 found under Housing Chip Collec by Honeywell Aerospace. The National Stock Number assigned to this part is 2835015380969, 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 3-300-957-01.