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Northern Industrial Air Impact Wrench — 1in. Square Drive
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Northern Industrial Air Impact Wrench — 1in. Square Drive

Item# 157831
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Was $289.99
Sale $249.99

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Manufacturer's Warranty: 12 months parts / 12 months labor

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Product Summary


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High-quality Northern Industrial Air Impact Wrench tackles the big jobs in the shop. Fixed left-hand support handle gives you additional control.

What's Included

  • (1) Impact wrench
  • (2) Sockets (38mm, 41mm)
  • (1) Hose barb
  • (1) Case

Features + Benefits

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  • Through-handle exhaust

Key Specs

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Item#157831
Ship Weight21.0 lbs
Drive (in.)1
Speed - No Load (RPM)4,600
Average Air Consumption (CFM)11
Max. Torque (ft.-lbs.)1,200
Hammer MechanismTwin
Variable SpeedYes
ReversibleYes
Inlet Size (in.)3/8
Min. Hose Size (in.)3/8
Case IncludedYes

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
12 months parts / 12 months labor

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Replacement Plan
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Drive (in.)
1/2 1 1 1/2 1/2
Speed - No Load (RPM) 8,000 3,200 4,600 9,800 9,800
Average Air Consumption (CFM) 4 8.7 11 5 5
CFM at Load 4.5 8.7 - - -
Operating PSI 90–120 90 - - -
Working Torque (ft.-lb.) 200–900 2,300 - 50–550 50–550
Forward Torque (ft.-lbs.) - 2,300 - 550 550
Max. Torque (ft.-lbs.) 1,295 2,300 1,200 780 -
Nut Busting Torque (ft.-lbs.) - 2,300 - 1,100 1,100
Max. Reverse Torque (ft.-lbs.) - 2,300 - 780 780
Impacts Per Minute (IPM) 950 under load 400 - 1,250 1,250
Hammer Mechanism Twin clutch Pinless Twin - -
Variable Speed
No Yes Yes Yes Yes
Reversible Yes Yes Yes Yes Yes
Standard Bolt Capacity (in.) - 1.72 - - -
Inlet Size (in.) 1/4 1/2 3/8 1/4 1/4
Min. Hose Size (in.) 3/8 1/2 3/8 3/8 3/8
Noise Level (dB)
86 118 - 109 86
Tool Weight (lbs.) 4 1/2 37 - 3.95 4.05
Tool Length (in.) 8 1/4 24 - 7 3/8 7 3/8
Case Included No Yes Yes - No