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Silver pneumatic impact wrench with 3/4 inch drive, aluminum hammer casing, forward reverse switch

American Forge & Foundry, Inc.

American Forge & Foundry 7670 3/4 in Drive Air Impact Wrench 956

SKU CH-GFSM-6G61H

A 3/4 inch drive pneumatic impact wrench delivers 360 to 390 ft-lbs reverse torque at 5,000 RPM with a tungsten titanium alloy hammer and anvil for extended service life

  • Delivers up to 390 ft-lbs reverse torque for stubborn fasteners
  • 5,000 RPM free speed enables rapid bolt removal
  • Tungsten-titanium alloy hammer and anvil extend service life
  • Aluminium hammer casing adds durability and protection
  • Adjustable throttle and forward/reverse switch give precise control

3/4" Drive Air Impact Wrench 7670

The American Forge & Foundry 7670 is a pneumatic impact wrench built for professional automotive technicians. A 3/4 inch square drive and 3/8 inch NPT inlet connect to shop air systems. It targets tire shops and heavy-duty fastener removal where high reverse torque is required daily.

Before ordering verify air supply

Confirm your compressor delivers sufficient CFM at the required PSI for continuous operation. The tool uses a 3/8 inch NPT fitting so check hose and coupler compatibility. Ensure the 3/4 inch drive matches the impact sockets you intend to use for lug nuts or large bolts.

Sustained load behaviour

The tungsten titanium alloy hammer and anvil resist wear during extended tire shop sessions. Working reverse torque ranges from 360 to 390 ft-lbs at 5,000 RPM for consistent breaker-bar performance. An aluminum hammer casing protects the mechanism from heat and debris during prolonged use. Adjustable throttle settings let the operator manage output without losing power.

How it compares

Measured against everything we stock in Air & Hydraulic Power Tools, at today’s prices. Recalculated every night.

Price $345.99
Pricier than about 83% of the 243 comparable items (median $61.99).

Specifications

Product
Brand nameAMERICAN FORGE & FOUNDRY

Questions about this item

Does the 7670 air impact wrench arrive with sockets or airline fittings, or must they be purchased separately?

The wrench ships as the tool only; 3/4-inch drive sockets and a 3/8-inch NPT air hose fitting are not included and must be sourced separately.

How do I decide whether the 360–390 ft-lb reverse torque range suits my shop work?

Choose based on the toughest fasteners you face — 390 ft-lb maximum reverse torque handles overtightened lug nuts and seized bolts common in heavy-duty tyre service.

What does the 5,000 RPM no-load speed mean when the 7670 is running on a shop compressor?

At 5,000 RPM the hammer mechanism delivers rapid impacts so lug nuts spin off quickly, provided your compressor supplies sufficient CFM at 90 PSI.

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