This 6 inch C-clamp set gives you four iron clamps with a 6-inch jaw opening and a 2.9-inch throat depth, per the listing. It suits general holding work in the garage: woodworking glue-ups, light metal fit-up before tack welding and automotive assembly. It is not a heavy-duty or lifting clamp, and the listing gives no load rating.
Quick specs (per the listing)
| Item | Detail |
|---|---|
| Count | 4 clamps |
| Jaw opening | 6 inches |
| Throat depth | 2.9 inches |
| Material | Heavy-duty iron with a coated surface |
| Load or clamping force rating | Not stated; verify before relying on it |
| Weight | Not stated on the listing |
What this 6 inch C-clamp set is good for
- Woodworking: holding panels and joints during glue-ups and fastening.
- Metal fit-up: holding plate or tube square while you tack. Check that clamp jaws stay clear of the arc and spatter.
- Automotive and repair work: holding brackets and parts in place during assembly.
The 6-inch opening covers fairly thick stock, but the 2.9-inch throat limits how far in from an edge you can clamp. If you need to reach further into a panel, look at a deeper-throat clamp.
How to check this C-clamp set fits your job
- Measure the thickest stack you need to hold and compare it with the 6-inch opening.
- Measure how far from the edge you need to clamp and compare it with the 2.9-inch throat.
- Decide whether you need a rated clamp. This listing gives no load rating, so do not use these for lifting or for holding anything where failure could cause injury.
- Plan how you will protect the work: use scrap blocks or pads under the screw pad to avoid marks on finished surfaces.
Care and welding-shop tips
- Wipe the clamps clean after use and add a light oil to the screw thread now and then.
- Weld spatter sticks to threads and can bind the screw. Anti-spatter spray or a wrapped thread helps.
- Do not use a C-clamp as a substitute for a proper welding ground clamp.
- Check for rust or a bent frame before loading the clamp, and retire any clamp that is bent or cracked.
Pros and limitations
Pros
- Four clamps in one set for glue-ups and fit-up.
- 6-inch jaw opening handles thicker stock.
- Coated iron frame, per the listing.
Limitations
- No load or clamping-force rating on the listing.
- 2.9-inch throat is on the shallow side.
- Not designed for lifting or high-load clamping.
Related guides: Another 4 piece 6 inch C-clamp set (3 inch throat) · C-clamp set review · 4-pack heavy duty F-clamp review
Frequently Asked Questions
What is the throat depth of this 6 inch C-clamp set?
The listing gives a 2.9-inch throat depth with a 6-inch jaw opening.
Can I use these C-clamps for welding?
Yes for holding parts during fit-up and tacking, as long as the clamp is not in the arc path and you protect the screw thread from spatter. They are not a welding ground clamp.
How much weight or force can the clamps take?
The listing does not give a load or clamping-force rating, so treat them as general holding clamps and do not use them for lifting.
Do these clamps come with a warranty?
Warranty terms are not verified here. Check the current Amazon listing before you buy.
How do I maintain C-clamps?
Wipe them clean, keep the screw thread lightly oiled, store them dry and discard any clamp that is bent or cracked.
Bottom line
This 4 piece 6 inch C-clamp set is a simple general-purpose option for woodworking and light metal fit-up. Buy it if the 6-inch opening and 2.9-inch throat match your work. Skip it if you need a rated clamp, deeper reach, or a clamp for lifting.
