Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FIG 7-51 INDEX 19 found under Indicator Pressure by Aar Powerboss Inc. The National Stock Number assigned to this part is 6685010996261, 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 FIG 7-51 INDEX 19.