The MAXPOWER 16 inch F clamp is a forged steel bar clamp for holding large plate, tube and frame work during fit-up. The listing gives a 16 inch maximum opening, a 5-1/2 inch throat depth, a black oxide spindle, a quick-adjust arm and a removable swivel pad. It is worth considering for medium to large fabrication, but its weight can tire you on overhead work.
Quick specs at a glance
| Item | Detail |
|---|---|
| Product | MAXPOWER 16 in F clamp |
| Max opening | 16 in, per the listing |
| Throat depth | 5-1/2 in, per the listing |
| Construction | Forged steel body with black oxide spindle |
| Features | Quick-adjust arm with a stop end, removable swivel pad |
| Clamping pressure | The listing claims 1,560 kg (about 3,450 lb); treat as a seller figure |
Specs are from the seller listing. A “30% more clamping pressure” claim is the seller’s comparison and cannot be verified here.
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What it is and who it suits
An F clamp is a bar clamp with a fixed jaw, a sliding arm and a screw. The long bar lets you hold wide assemblies like gate frames, tabletops and trailer parts, which is where C-clamps run out of reach.
This 16 inch model has a deep 5-1/2 inch throat that reaches in from the edge. It suits fabricators, welders and builders who need a hold on large parts while they tack. Its weight and length are overkill for sheet metal or small parts.
How to check it fits your project
- Span: confirm the widest assembly you need to clamp fits inside 16 inches, including pads.
- Reach: check the 5-1/2 inch throat clears flanges, angle legs or bracing.
- Pad: the swivel pad is removable; leave it on to protect surfaces and take it off for bare-metal contact.
- Weight: long forged clamps are heavy, so check the listing weight.
- Quantity: you typically need at least two, so plan how many to buy.
Check the current price on Amazon →
Pros and limitations
Pros
- Big capacity for large assemblies.
- Forged steel body for stiffness.
- Quick-adjust arm slides fast along the bar.
- Swivel pad helps the head seat on uneven surfaces.
Limitations
- Heavy and bulky for one-handed use.
- Spatter damages the screw and bar if left unprotected.
- Bar flex is still possible at full opening under heavy load.
- Seller force figures are not independently verified.
Getting good results
- Position the fixed jaw on a stable face and slide the arm until it touches.
- Tighten the screw by hand, then give a firm final turn without a cheater bar.
- Check the part is still square before you tack.
- Cover the screw with a welding blanket scrap or anti-spatter if you weld nearby.
Don’t use it as a lifting aid or to straighten heavy distortion. Wear gloves because clamps near the weld get hot.
Alternatives and related guides
- Olympia locking pliers: locking pliers for quick tacking
- C-clamp set: a C-clamp set for smaller jobs
- Turnirace welding table clamps: hold work to a fixture table
- welding anti-spatter compound: protect the screw and bar
Frequently Asked Questions
What is an F clamp used for in welding?
An F clamp, or bar clamp, holds large parts together or against a table during fit-up and tacking. It has more reach and span than a C-clamp, which makes it useful for frames, gates, trailers and long pieces.
How much clamping force is enough?
Enough to hold parts without distortion. The listing claims about 1,560 kg, but you usually do not need that much to hold pieces for tacking. Over-tightening can bend thin steel, so tighten until the joint is stable and no more.
Can I weld near an F clamp?
Yes, but spatter can damage the screw threads and bar finish. Use anti-spatter spray or a cover, and avoid welding on the clamp. Let the clamp and work cool before loosening so your fit-up does not move.
Will one clamp be enough?
Usually not. Most fabrication jobs need two or more clamps to hold parts square and prevent rotation. Plan to pair this with other clamp types such as C-clamps, locking pliers and magnetic squares.
Final verdict
The MAXPOWER 16 inch F clamp gives forged-steel strength and a deep throat for large welding assemblies. It is heavy and not needed for light work. Prices change, so check the current listing.
Check the current price on Amazon →
