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Electrical Tachometer Indicators
Part 981B4-022
Model #981B4-022
Electrical tachometer indicator (NSN 6620-00-663-4275)
Scale Marking And Surface Finish
Minor graduation luminous and major graduation luminous and minor graduation luminous and major graduation luminous
Width
3.250 inches
Current Type
Ac
Depth
5.250 inches
Contact Quantity
3
Contact Type
Pin
Presentation Type
Synchro motor
Individual Marking
Marked w/straight black line in center; r
Electrical Connection Quantity
2
Electrical Connection Identifying Number
Part no. X-814-8-1
Mounting Facility Type And Quantity
4 unthreaded hole
Mounting Stud Diameter
0.1695 inches
Height
3.250 inches
Fsc Application Data
Engine instrument aircraft
Description
Indicator,electrical Tachometer
Cage Code
89944
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Part Number:
981B4-022
NSN 6620-00-663-4275
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Updated: 10/06/2024