Product Description
CMT JT118A-5 Jig Saw Blades are precision-ground High-Speed Steel (HSS) blades engineered for fine, straight cuts in thin ferrous and non-ferrous sheet metals. Designed to handle material thicknesses from 3/64 in. to 1/8 in. (1 mm to 3 mm), these 3-inch blades with a 21 TPI tooth configuration deliver clean, controlled cuts in applications where accuracy and edge quality matter. Each pack includes 5 blades, giving you reliable backups for demanding metalworking jobs. With a universal T-Shank, these jig saw blades are compatible with all major corded and cordless jig saws without the need for an adapter.
Key Features
- High-Speed Steel (HSS) Construction - HSS material provides the hardness and heat resistance needed to cut through ferrous and non-ferrous metals, keeping the cutting edge sharp through repeated use in thin sheet metal applications.
- 21 TPI Fine-Tooth Design - A 21 TPI tooth count with 1.2 mm tooth spacing produces fine, smooth cuts in thin metals, reducing burrs and minimizing cleanup time on finished workpieces.
- 3-Inch Total Length with 2-Inch Cutting Height - The 2-inch cutting capacity is optimized for thin sheet metals from 3/64 in. to 1/8 in. thick, keeping the blade stable and reducing flex during precision straight cuts.
- Universal T-Shank - The T-Shank is a standard fit for virtually all major jig saw brands and models, so you can swap blades quickly without tools or adapters, reducing downtime on the job.
- 5-Piece Pack - Sold in a pack of 5 identical blades, giving you immediate replacements on hand so metalworking projects are never interrupted by a worn blade.
- Straight-Cut Geometry - The blade geometry is purpose-designed for straight cuts, delivering accurate results in thin sheet metals, pipes, and profiles without the blade wandering off the cut line.
Why This Product
- If your work regularly involves cutting thin ferrous or non-ferrous sheet metal in the 3/64 in. to 1/8 in. range, the 21 TPI tooth pitch is specifically matched to that material thickness - coarser blades tend to grab and tear thin sheet stock, while this fine pitch shears cleanly through it.
- The HSS material class is suited for metal cutting where bi-metal alternatives may be overkill for lighter gauge stock - these blades offer a practical, purpose-specific solution for thin metal straight cuts on ferrous and non-ferrous materials alike.
- The universal T-Shank design removes compatibility guesswork - whether you are running a corded or cordless jig saw from any major manufacturer, these blades install directly without adapters or modification.
- A 5-piece quantity means you have a full working set ready for a project or a service kit without needing to reorder immediately - ideal for tradespeople or shops that process thin sheet metal on a regular basis.
Specifications
- Manufacturer Part Number: JT118A-5
- Brand: CMT Orange Tools
- Total Length: 3 in.
- Cutting Height: 2 in.
- Shank Type: T-Shank
- Maximum Material Thickness: 3/64 in. - 1/8 in.
- Number of Teeth: 21 TPI
- Tooth Spacing: 1.2 mm
- Blade Material: High-Speed Steel (HSS)
- Cut Type: Straight
- Quantity: 5-Piece
Approved Applications
- Fine straight cuts in thin ferrous sheet metal (1 mm to 3 mm thick)
- Fine straight cuts in thin non-ferrous sheet metal (1 mm to 3 mm thick)
- Cutting aluminum sheet and profiles
- Cutting thin-walled pipes and metal profiles
What's Included
- 5x CMT JT118A HSS Jig Saw Blades - 3 in. x 21 TPI, T-Shank
Frequently Asked Questions
What material thicknesses are these jig saw blades designed to cut?
These CMT HSS jig saw blades are designed for thin sheet metals ranging from 3/64 in. to 1/8 in. thick (approximately 1 mm to 3 mm). This specific thickness range is where the 21 TPI tooth pitch performs most effectively, producing fine, clean straight cuts without tearing or grabbing the material.
Will these blades fit my jig saw?
Yes - these blades feature a universal T-Shank, which is the standard shank type accepted by virtually all major corded and cordless jig saw models. No adapter is required for T-Shank compatible machines.
Can these blades cut both ferrous and non-ferrous metals?
Yes. The CMT JT118A blades are specifically designed for straight cuts on thin ferrous and non-ferrous metals. This includes materials such as aluminum and other non-ferrous sheet metals, as well as ferrous (iron-containing) sheet stock within the supported 3/64 in. to 1/8 in. thickness range.
Why does tooth count matter when cutting thin sheet metal?
A higher TPI count - such as the 21 TPI on these blades with 1.2 mm tooth spacing - ensures that multiple teeth are always in contact with thin sheet material during the cut. This reduces vibration, prevents the blade from catching or tearing the workpiece, and produces a finer, smoother edge compared to lower TPI blades that are designed for thicker stock.
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