Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1B1258 found under Chip Detector Assy by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 2990014206276, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1B1258.