Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number G27-160REVB found under Gage Differential Dial Indicatin by Ashcroft Inc. The National Stock Number assigned to this part is 6685000427750, 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 G27-160REVB.