JAT-100, 3/8" Butterfly Impact Wrench

JAT-100, 3/8" Butterfly Impact Wrench

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JAT-100, 3/8" Butterfly Impact Wrench

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The JET JAT-100 brings you power, control, and easy operation for your 3/8" drive small fastener jobs. This tool is great for transmission servicing, bench work or small assembly jobs.


  • Single Hammer impact mechanism for smooth power and torque
  • Compact design for cramped spaces
  • Variable-speed throttle lets you adjust speed smoothly
  • Lightweight aluminum construction reduces weight
  • 360° swivel brass air inlet
  • Built-in multi-position regulator
  • Performace @ 90 PSI. Air Inlet NPT 1/4". Min Hose Size 3/8"


  • Square Drive (In.) 3/8
  • Working Torque (Ft.) (Lbs.) 5-50
  • Max Torque (Ft.) (Lbs.) 75
  • Free Speed (RPM) 12,000
  • Blows Per Minute (BPM) 700
  • Impact Mechanism / Clutch Type Single Hammer
  • Bolt Capacity (In.) 3/8
  • Anvil Retainer Type Ring
  • Air Inlet (NPT/In.) 1/4
  • Air Hose (ID/In.) 3/8
  • Air Pressure (PSI) 90
  • Air Consumption (CFM) 3
  • Sound Pressure (db) (A) 110
  • Sound Power (db) (A) 114
  • Vibration Value (m/s²) 13.4
  • Overall Length (In.) 5-7/8
  • Weight (Lbs.) 2

Warranty Information


JET warrants every product it sells. If one of our tools needs service or repair, one of our Authorized Service Centers located throughout the United States can give you quick service. In most cases, any of these JPW Industries Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or perform routine maintenance and major repair on your JET tools. For the name of an Authorized Service Center in your area call 1-800-274-6848.


Full Series

Stock No.Model No.ClassificationSquare Drive (In.)Working Torque (Ft.) (Lbs.)Max Torque @ 5 Seconds (Ft.) (Lbs.)Max Torque (Ft.) (Lbs.)Purchase
Stock No.505206Model No.JAT-206Classification-Square Drive (In.)1Working Torque (Ft.) (Lbs.)400-1,650Max Torque @ 5 Seconds (Ft.) (Lbs.)-Max Torque (Ft.) (Lbs.)2,200Buy Now >> 505100
Stock No.505100Model No.JAT-100Classification-Square Drive (In.)3/8Working Torque (Ft.) (Lbs.)5-50Max Torque @ 5 Seconds (Ft.) (Lbs.)-Max Torque (Ft.) (Lbs.)75Buy Now >> 505102
Stock No.505102Model No.JAT-102Classification-Square Drive (In.)1/2Working Torque (Ft.) (Lbs.)50-200Max Torque @ 5 Seconds (Ft.) (Lbs.)-Max Torque (Ft.) (Lbs.)250Buy Now >> 505103
Stock No.505103Model No.JAT-103Classification-Square Drive (In.)1/2Working Torque (Ft.) (Lbs.)25-400Max Torque @ 5 Seconds (Ft.) (Lbs.)-Max Torque (Ft.) (Lbs.)680Buy Now >> 505103

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