Stanley 12-in. Extra Large Trigger Clamp (FMHT83279)
Stanley 12-in. Extra Large Trigger Clamp (FMHT83279)
Out of Stock - Available to Order - Usually ships in 20-30 days
Product Details
Product Details
Key Features
Overview
The Stanley 12-in. Extra Large Trigger Clamp (FMHT83279) is a one-handed bar clamp that opens to 12" and closes with a squeeze of the pistol grip. This is a trigger clamp designed for woodworking glue-ups, assembly, and holding work during cutting, drilling and fastening. The clamp delivers up to 600 lb of sustained clamping force.
Throat depth is 3-5/8", measured from the bar to the center of the jaw pad. That reach lets the jaws grab farther in from the edge of a panel or frame, which matters on wide stock and face frames.
The I-beam bar has a black oxide finish for corrosion resistance, and the I-beam profile adds rigidity so the bar resists flexing when you crank down hard on long assemblies.
Pull the movable jaw off and reinstall it on the opposite end of the bar and the clamp becomes a spreader. Use it to push apart racked frames, separate glued parts, or hold a cabinet side out to final width.
Removable non-marring pads cover the jaws so finished surfaces, veneers and softwoods come out without dents. Pop them off when you want more bite on rough stock.
This size is the heavy-hitter for big case work, tabletops, and jobsite tasks where you need serious holding power across a long span. Woodworkers, cabinetmakers, remodelers and serious DIYers will all put it to work.
Hold It While You Work

Trigger clamps free up your second hand: set the jaw, squeeze, and get back to the cut or the glue-up.
- Opens to 12"
- 3-5/8" throat depth
Release in an Instant

The quick-release lever drops clamping pressure immediately and lets the jaw slide freely for the next setup.
- One-handed release
- Fast jaw repositioning
Protect the Finish

Non-marring pads keep the jaws from denting finished or soft surfaces.
- Removable pads
- Durable black oxide I-beam bar
Built for Repeat Setups

Matched sizes let you clamp evenly along a joint without hunting for a second clamp.
- 12-in. capacity
- Pistol-grip handle
Key Specifications
| Clamp Type | Trigger Clamp (One-Handed Bar Clamp) |
|---|---|
| Sustained Clamping Force | 600 lb |
| Maximum Opening | 12" |
| Throat Depth | 3-5/8" |
| Overall Length | 21-7/16" |
| Bar | Black Oxide I-Beam Steel Bar |
| Jaw Pads | Removable, Non-Marring |
| Converts to Spreader | Yes, Quick-Change Jaw |
| Color | Black |
Built For
Pro Tip
To spread instead of clamp, pull the sliding jaw off the bar, flip it, and slide it back on from the other end so the pads face outward. It is the quickest way to push a racked cabinet back to square.
Tool Nut's Take
Big Span, Big Squeeze
The Stanley 12-in. Extra Large Trigger Clamp gives you fast, one-handed clamping with 600 lb of hold and pads that keep your work clean.
- Who it's for: Pros and serious woodworkers who need maximum hold on wide glue-ups and big assemblies.
- Why it stands out: The flip-jaw spreader function and rigid I-beam bar.
- Worth knowing: Buy them in pairs or more; even clamping on both sides of a panel keeps it flat.
Common Questions
- How wide does the Stanley 12-in. Extra Large Trigger Clamp open? It opens to 12" between the jaws.
- Can I use it as a spreader? Yes. The quick-change jaw flips to the opposite end of the bar without tools.
- Will it mark my workpiece? Removable non-marring pads cover the jaws to protect finished and soft surfaces.

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