Husky 1/2 in. 500 ft. -lbs. Impact Wrench-H4450 at The Home Depot
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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
Item cannot be shipped to the following state(s): GU,PR,VI


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


Rated 2.8 out of 5 by 16 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 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 3 out of 5 by replacement for impact wrench Bought as a replacement for impact wrench that came as part of a set when I bought my compressor. Used it once to drive lag bolts on a project. I don't think this 500 ft-lb is as good as the original as it doesn't have the same drive capability as the old one. Probably should have bought the 700 ft-lb wrench. But think it will work fine for what I use it for most of the time which is for tire rotation on my vehicles. Not sure about the plastic housing. July 29, 2014
Rated 3 out of 5 by Disappointed This impact wrench came packaged in a nice protective sleeve. Unfortunately, you almost have to destroy the box flap to get it open because they use too much glue. I like keeping my tools in their boxes when storing and I hope they will revise the box. Overall I am disappointed with this product. It is rated at 500 FT-LBS but it struggled to break the lug nuts loose on my truck (which are torqued to 150 ft-lbs). I had it connected to a full size compressor with 140 lbs of line pressure. I pulled out a different impact wrench rated at 230 ft-lbs and it performed better. While the black paint looked nice and unique out of the box, it scratched super easily revealing the bare metal underneath (see picture). Impact wrenches are going to get a lot of use and be scuffed up regularly. If they went with chrome or unpainted metal, the scratches would not be as evident. I like the multiple forward speeds and the direction lever is a great size and easy to move. Unfortunately it and the trigger are both made of plastic and I wonder how many drops/bumps before it breaks. The product would be better with metal trigger and lever. February 14, 2014
Rated 1 out of 5 by Will not bust lug nuts Extremely disappointed. Absolutely will not bust a lug nut loose. If it were within the 90 days return policy I would take it back. Unfortunately I bought it about 5 months ago but did not get to use it until just now. I'm using a big shop-style compressor so it must be this impact wrench. Would not recommend it for use on lug nuts. July 2, 2014
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