Enstrom - F-28F Piston, 480B Turbine, 280FX Piston Mast Nut Tooling

Airbus Testimonial

“Working with the team at Advanced Torque Products has been a great experience in developing the EC145/H145 Mast Nut Torque Tool. Installation is easy, operation is easy, and one of the best things is that the torque device is fixed to the fitting, which is far better than the hand held torque multiplier currently being used.”

Airbus – Technical Instructor –


Mast Nut



Aircraft(s) / Engine(s):

F-28F Piston, 480B Turbine,280FX Piston

Catalog Number:


Wrench Series:

ATP 750 Series

Contact us for help with a specific model:

Product Specifications

Torque Range (ft-lbs)0 - 750
Torque Range (in-lbs)0 - 9,000
Torque Range (N.m.)0 - 1,017
Max. Input Required (ft-lbs)34 ft-lbs
Output Accuracy+/- 1% (+/- 0.4% upgrade available)
System Stability+/- 0.05% per °C (+/- 0.03% per °F)
Units of Measurementft-lbs, in-lbs, n/m, others
Operating Temperature0°F to 110°F (-18°C to 43°C)
Operating HumidityUp to 90%, Non-condensing
Multiplier Ratio22 to 1
Weight (lbs)4.5 lbs
Weight (kg)2.0 kg

   U.S. Pat. Nos. 8,434,389 and 8,991,284