T-Shank vs U-Shank Jigsaw Blades
The difference between T-shank and U-shank jigsaw blades is the single most important compatibility question when buying jigsaw blades. These two shank types are completely incompatible — a T-shank blade will not fit a U-shank jigsaw, and a U-shank blade will not fit a T-shank jigsaw. There is no adapter. This guide explains the difference, how to identify which type your jigsaw uses, and which brands use which system.
Quick Answer
T-shank has a smooth tang with a bump/ridge that clicks into the blade clamp. U-shank has a U-shaped notch at the bottom. T-shank is the modern standard used by virtually all jigsaws made since the early 2000s. U-shank is a legacy format. If your jigsaw has a tool-free quick-release blade clamp, it uses T-shank.
What Is T-Shank?
T-shank (also called T-tang) blades have a smooth shank with a small raised bump on each side that locks into the jigsaw’s blade clamp. The “T” refers to the cross-shaped profile of the tang when viewed from the front. T-shank was invented by Bosch and has become the universal standard for modern jigsaws.
T-shank blades click into the blade clamp with a tool-free quick-release mechanism — you press a lever or button on the jigsaw, slide the blade in, and release. No tools required. This is one of the main advantages over U-shank and is the easiest way to identify a T-shank jigsaw.
What Is U-Shank?
U-shank (also called universal shank or bayonet mount) blades have a U-shaped notch cut into the bottom of the shank. This notch hooks over a pin inside the jigsaw’s blade holder, and a set screw tightens to secure the blade in place. You need an Allen key or screwdriver to change U-shank blades.
U-shank was the original standard before T-shank replaced it. It is now found almost exclusively on vintage jigsaws, very budget models, and some older Black & Decker and Skil jigsaws.
T-Shank vs U-Shank Comparison
| Feature | T-Shank | U-Shank |
|---|---|---|
| Blade change | Tool-free (lever/button) | Requires screwdriver/Allen key |
| Grip security | Excellent — rigid 3-point lock | Good, but can loosen during heavy cuts |
| Blade availability | Huge range — all major brands | Very limited — mostly discontinued |
| Used by | Bosch, Makita, DeWalt, Milwaukee, Festool, Hikoki, Ryobi, Metabo | Some older Black & Decker, Skil, vintage jigsaws |
| Invented by | Bosch (1990s) | Pre-dates T-shank |
| Current status | The modern standard | Legacy / discontinued by most brands |
Important: T-shank and U-shank blades are NOT interchangeable. There is no adapter. If you have a U-shank jigsaw and want access to the full range of modern blades, the most practical solution is to upgrade to a T-shank jigsaw.
How to Tell Which Type Your Jigsaw Uses
The quickest way to identify your jigsaw’s blade type is to look at the blade clamp mechanism:
- Lever or button on the front/side of the jigsaw → T-shank. Press the lever, slide the blade in, release. No tools needed.
- Set screw on the blade holder (requires Allen key or screwdriver) → U-shank. The blade hooks onto a pin and is clamped by the screw.
- Check the existing blade — remove it and look at the shank end. T-shank has a smooth tang with bumps; U-shank has a U-shaped notch.
Which Brands Use T-Shank?
Every major power tool manufacturer now uses T-shank exclusively on their current jigsaw range. This includes Bosch (who invented it), Makita, DeWalt, Milwaukee, Festool, Hikoki, Ryobi, Metabo, Einhell, and Parkside. If you buy any new jigsaw today, it will use T-shank blades.
Recommended T-Shank Jigsaw Blades
| Blade Set | Pieces | Best For | Link |
|---|---|---|---|
| Bosch 10-Piece Jigsaw Blade Set | 10 | All-round starter set (wood, metal) | View on Amazon |
| Bosch Expert Laminate Clean T 128 BHM (3-Pack) | 3 | Clean cuts in laminate and vinyl | View on Amazon |
| Bosch Expert Hardwood T 308 BF (5-Pack) | 5 | Clean cuts in hardwood and plywood | View on Amazon |
As an Amazon Associate, we earn from qualifying purchases.
Common Questions
Can I use T-shank blades in a U-shank jigsaw?
No. The shank shapes are completely different and there is no adapter available. You would need to replace your jigsaw with a T-shank model.
Are all T-shank blades the same size?
The shank (the part that fits the jigsaw) is standardised across all T-shank blades. However, the blade body varies in length, width, tooth count, and material. A T-shank blade from any brand will fit any T-shank jigsaw.
Does Bosch make the best T-shank blades?
Bosch invented the T-shank system and their blade range is arguably the widest, but excellent T-shank blades are also made by Makita, Festool, and third-party brands like Saxton. Brand compatibility is not a concern — any T-shank blade fits any T-shank jigsaw regardless of brand.
Related guides: Saw Blade Compatibility Guide | Are Jigsaw Blades Universal? | Saw Blade Types Guide