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⚡ Ground your system like a pro—secure, certified, and built to last!
The Sigma ProConnex 41309 Ground Clamp is a premium copper alloy grounding clamp designed for reliable electrical connections. It fits pipe sizes from 1/2" to 1", supports wire gauges #10 to #2, and rebar sizes 5/8" to 3/4". Featuring zinc-plated steel screws for corrosion resistance and UL/CSA certification, it guarantees safety and durability for professional-grade grounding solutions.
| ASIN | B002YEIKFW |
| Best Sellers Rank | #188,519 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #234 in Pipe Clamp Tools |
| Brand | Sigma Engineered Solutions |
| Brand Name | Sigma Engineered Solutions |
| Color | Bar |
| Customer Reviews | 4.7 out of 5 stars 1,189 Reviews |
| Global Trade Identification Number | 00031857413095 |
| Included Components | Sigma Electric ProConnex 41309 Ground Clamp 1/2 to 1-Inch, 1-Pack |
| Item Dimensions | 2.56 x 2.28 x 0.65 inches |
| Item Type Name | Sigma Electric ProConnex 41309 Ground Clamp 1/2 to 1-Inch, 1-Pack |
| Item dimensions L x W x H | 2.56 x 2.28 x 0.65 inches |
| Manufacturer | Sigma Engineereed Solutions |
| Manufacturer Part Number | 41309 |
| Manufacturer Warranty Description | Warranty |
| Material | Copper Alloy |
| Material Type | Copper Alloy |
| Model Number | 41309 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Style | Modern |
| Style Name | Modern |
| Tensile Strength | 500 psi |
| UPC | 031857413095 |
| Unit Count | 1 Count |
T**D
Well built, worked fine on 1 inch gas line
Worked well as a grounding clamp on a 1" gas pipe. You have to completely unscrew it to get it on a 1" pipe, but it tightens down just fine and is solidly constructed.
R**R
Get it Grounded, uh. Yeah.
I've been using these grounding clamps for a while. They really come in handy when you need to ground stuff like a generator or the electronic circuit in your home. I had some serious blow outs and a lightening bolt one time. Grounding your system really is a life, time and money saver. If you're not properly grounded, you could lose all your home electronics and the grid system. These clamps will keep your electronic apparatus happy and running.. . even your washer.
H**E
Quality Clamp
Fit great on 3/4" galvanized pipe. Not a lot more to add, since this isn't some complex-multi-featured item.
T**S
Durable
We used this to in our grounding system for our antenna. Husband installed, had no issues and in a matter of minutes. Good quality.
A**R
Durability
Perfect size and durability.
V**I
Recommend
Works as it should
E**B
Good Ground Clamp
We had some plumbing repair and the plumber replaced some of the copper pipe with PEX. The electrical panel was located on the opposite side of the house from the water main and the panel was grounded both to a ground rod outside but also to a water line. An electrician said it wasn't really necessary to ground it to the water line in this case, but if we wanted to be extra safe, we would put a ground between the copper on both sides of the new PEX. We bought two of these and grounding wire and easily installed these. They are high quality and easy to use. They were also significantly better priced than our big box hardware store.
R**.
Well made
Worked well
T**Z
Buena.
Se siente de calidad y se ajusta sin problemas a la barilla.
N**E
Good fit
It fir my 1.25 inch antenna mast perfectly
A**0
perfect for copper
well made. bronze-copper alloy. connects well
G**M
Decent item for the price
Happy with the product since it works as advertised!
S**N
Used for Ham Radio grounding rods.
Overall the clamps were easy to install and appear able to stand up to the NW BC weather conditions of rain ice wind and snow. Again, I was expecting a somewhat heavier clamp but all is well and I'm happy.
Trustpilot
1 month ago
1 day ago