Husky 1/2 in. 500 ft. -lbs. Impact Wrench-H4450 - The Home Depot


Model # H4450

Internet # 203458696

Store SKU # 682476

1/2 in. 500 ft. -lbs. Impact Wrench

Husky 1/2 in. 500 ft. -lbs. Impact Wrench

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

$79.98 / each


Model # H4450

Internet # 203458696

Store SKU # 682476

The new Husky air tool line is built to industrial standards for the professional user providing more power, less noise and longer life. This new Husky 1/2 in. Impact Wrench features a low weight composite housing and low vibration Dynapact clutch that produces 500 ft.-lb. of torque. Internal silencing greatly reduces tool noise and the built-in Forward/Reverse power management system allows the user to match the speed and power of the tool to the job. Designed for removing and installing fasteners during auto/recreational vehicle/garden-agricultural equipment/machinery service and repair.

California residents: seeProposition 65 information

  • 500 ft. -lb. of torque
  • Low vibration dynapact clutch for smooth operation and reliability
  • Low weight composite housing
  • Built-in silencing reduces noise level
  • Ring type retainer for secure socket retention
  • Built-in forward/reverse power management system

Info & Guides

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Air Inlet Size  0.25 in  Assembled Depth (in.)  7.75 in 
Assembled Height (in.)  7.88 in  Assembled Width (in.)  2.60 in 
Drive Size (in.)  1/2  Product Height (in.)  7.88 
Product Length (in.)  7.75  Product Width (in.)  2.6 
Air Tool Type  Impact Wrench  Air consumption at recommended operating pressure (CFM)  90 
Compressor/Air Tool Features  No Additional Features  Housing Material  Composite 
Impacts Per Minute  900  Included  No additional components or accessories are included 
Maximum Speed (rpm)  6700  Maximum torque (ft.-lb.)  500 
Project Type  Bolting  Recommended operating pressure (psi)  90 
Returnable  90-Day  Tool weight (lb.)  4.78 
Tools Product Type  Power Tool  Variable power settings 
Warranty / Certifications
Manufacturer Warranty  2 Years 


Rated 2.7 out of 5 by 19 reviewers.
Rated 5 out of 5 by Strong and versatile with clever features The drill has a light weight feel to it but still seems durable. I like that it has built in forward torque settings. The 3 settings help on most projects when you are concerned about shearing off a bolt head from over tightening. There are three sized circles. The larger the circle the more power. The reverse is always full power. I was surprised too that a 1/2 inch impact was as quiet as it was. Quieter than most other wrenches. Good buy overall February 1, 2014
Rated 1 out of 5 by horrible Extremely disappointed in this impact. Has a very very hard time breaking lug nuts loose. The socket holder free spins, making it hard to attach a socket. Also, I've used this to remove the bed on my truck to do a fuel pump, and two rear axle brake jobs. That's it, and now the little white balls are sitting on the screen where the air exits and the impact runs air through itself trying to spin, even without your finger on the trigger. I'll try to return this junk if I can find my receipt. Save yourself the trouble and find another impact. November 20, 2014
Rated 1 out of 5 by Cheap feel right out of the box Right out of the box, at the bottom of the handle there's a flimsy plastic cover (with holes over the little balls inside) just wouldn't fit correctly so it would slide and eventually the balls would fall out. If you adjust the screw too tightly, the end would break off, or the plate would bend. Either way, I don't see that piece to last long for the life of the tool. After taking off a couple of lug nuts on my trailer, the stubborn thing would not stop spinning even when your fingers aren't touching the trigger button. I could adjust the Forward/Reverse, fast & slow but can't make it stop spinning on its own. Took it back. Willing to pay a little more and will never buy another Made in China tool again. August 10, 2014
Rated 2 out of 5 by Weak tool. I bought this tool for my home shop which has a professional air compressor and this tool would not break lug nuts on my car that were torqued to 100 foot pounds at 95 psi working pressure. I double checked by retorquing the nuts but they would not budge. I really thought that a tool rated at 500 pounds would have no problem. Looks nice, but scratches easily. Went for $79. Next time I'm spending the extra $$ for a better tool! November 2, 2014
Rated 4 out of 5 by Nice for the price I could not break the bolt from my Cub Cadet rider blades and figured I needed one of these. I did not want to go to cheap, but I don't need top of the line either since this is really all I will need it for. Hooked it up to my 6.5 California air tool compressor and came off without a hitch. Yeah, I wish they would have made all of the components out of metal, but for this price, I can live with it. October 9, 2014
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