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Model # HSTC4150

Internet # 100678423

1/2 in. Air Impact Wrench-DISCONTINUED

This item has been discontinued.
The Home Depot no longer carries this specific product.

$139.00 /each




Model # HSTC4150

Internet # 100678423

The STC International 1/2 in. Air Impact Wrench delivers the power you need along with features that minimize user fatigue. Its 650 ft.-lb. of torque and 1,300 ipm handle many challenging jobs. All of the torque is available in reverse, thanks to a twin hammer mechanism. This impact wrench has a muffler system and swivel air inlet. It directs exhaust away from both the workplace and the operator.

  • 650 ft.-lb. of torque for many difficult tasks
  • Twin hammer mechanism provides maximum torque output in reverse
  • Delivers 1,300 ipm for powerful performance
  • Precision-tip valve for smooth throttle operation
  • Adjustable power and forward/reverse knob for full control
  • Muffler system for quiet operation
  • Swivel air inlet
  • Through-handle exhaust directs air away from the workplace and operator
  • Lightweight aluminum composite housing
  • Heat-treated and shot-peen-hardened critical components for durability
  • Note: product may vary by store

Info & Guides

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Air Inlet Size 
1/4 in 
Drive Size (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Length (in.) 
Product Width (in.) 
Accessories Included 
Air Tool Type 
Impact Wrench 
Air consumption at recommended operating pressure (CFM) 
Case Included 
Compressor/Air Tool Features 
No Additional Features 
Forward/Reverse Rocker Switch 
Housing Material 
Impacts Per Minute 
No additional components or accessories are included 
Maximum Speed (rpm) 
Maximum torque (ft.-lb.) 
Project Type 
Recommended operating pressure (psi) 
Tool weight (lb.) 
Tools Product Type 
Air Tool 
Variable power settings 
Warranty / Certifications
Manufacturer Warranty 
2 Year Limited Warranty 


Rated 4.4 out of 5 by 51 reviewers.
Rated 4.0 out of 5.0 by Good tool for the money. I've had mine for over two years...I use it a couple times a week. It is much more quiet than a Craftsman model I had - and it has a lot more torque. It has not failed me - I keep it lubed before and after each use. I have no complaints, and would buy it again. May 9, 2013
Rated 4.0 out of 5.0 by Great product for the price I purchased this item as a Special Buy of the Day. An inexpensive impact wrench rated at 350 ft. – lb. that I had previously would not always loosen lug nuts. This tool does a much better job and is was a great value at the sale price. November 12, 2013
Rated 5.0 out of 5.0 by Shocker I originally bought this tool because it claimed to have as much power as its more expensive brothers. When I got it out of the box and plugged it in it was so quiet I didn't think there was any way possible it was as strong as it said it was but the other day when I was in the shop I walked over to a bunch of guys trying to get a set of lugs off of a tire; after four different impacts (high dollar brands no less) and no luck I walked over and finally decided to try out my new toy. To my surprise the Husky impact took the lugs off the car without even flinching I was very impressed. I would recommend this product to anyone that wants to have a good impact but doesn't want to spend the money on the big names. February 26, 2010
Rated 5.0 out of 5.0 by Great! Couldn't ask for a better deal! 650 ft-lbs has zipped off every lug nut, axle nut that i've asked it too. And was the same price as competitor's 250-400 ft-lb guns July 18, 2013
Rated 5.0 out of 5.0 by Works great Had good luck with Husky over the years and I'm not disappointed with this one. Been using it for lugs and so far it works like a champ. August 26, 2013
Rated 5.0 out of 5.0 by strong gun! I havn't come across not one nut or bolt this thing would not break loose. Best $60 impact gun I've used. July 3, 2013
Rated 2.0 out of 5.0 by hassle to use if you have to work fast Well, I was skeptical about this one and should have followed my "instinct". First of all...on the display model, the direction and strength control wheel was completely locked up. I assumed that it was simply because it was a display model that had been way over tested. An hour later when I opened mine, I found that same direction/strength wheel selector to be VERY hard to turn. After oiling it and rotating the selector for about 15 minutes there was no change. At times, I could not move the selector with one hand. I love the Husky hand tools, but this one didn't pass. I work as a technician at a dealership, and this tool would slow me down way too much. March 20, 2010
Rated 1.0 out of 5.0 by 650 ft/lbs? HAAA! The fact that Husky claims 650 ft/lbs is absolutely laughable. I had the proper set up and oiled this thing before tackling a wheel change on my car. This thing failed to remove two of the lug nuts. I used my torque wrench to loosen them and they both loosen at about 140 ft/lbs. Being a little over 500 ft/lbs off is just plain ridiculous. Don't be fooled by the manufacturer's vastly optimistic "measurement" of the torque. Nor should you be fooled by all the positive reviews from people who never tested it's strength. It does seem like it's high quality when you gold it in your hand, and it is moderately quiet, but those observances do not offset the lacking in functionality. November 27, 2013
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