The Duo-Fast SM7664 is a heavy-wire pneumatic tacker engineered for high-duty applications like crating, pallet assembly, thick substrate fastening and manufacturing-line tasks. The tool features a robust construction, quick-clear nose for jam reduction, and a top-loading magazine for fast reloads.
Key Features
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Heavy-wire staples (16-gauge) with a 7⁄16″ crown — designed for leg lengths ranging approximately from ¾″ up to 2″
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Lightweight for its class (approx. 4.1 lbs) to reduce operator fatigue
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Top-load magazine and tool-free quick-clear nose for rapid reloading and jam clearance
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Suitable for thick, dense materials and high-volume fastening in manufacturing or packaging environments
Specifications
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Crown Width: 7⁄16″
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Staple Leg Length Range: approx. ¾″ – 2″
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Wire Gauge: 16-ga heavy-wire
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Weight: approx. 4.1 lbs
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Magazine Type: Top-loading
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Intended Operating Pressure: ~80-120 psi
Why Choose This Tool?
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Built specifically for demanding fastening tasks where standard fine-wire tackers fall short — suitable for crating, sheathing, pallet frames, thick multilayer substrates
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The reduced weight and ergonomic features make it more manageable for high-cycle use compared to older bulky models
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Top-load and quick-clear features minimise downtime and boost productivity in repetitive manufacturing or packaging operations
Things to Know Before Buying
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Requires a consistent, clean compressed air supply capable of delivering ~80-120 psi for optimal performance — ensure your compressor, hoses, regulator and filters are up to spec
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Verify that your staple inventory matches the crown width (7⁄16″), wire gauge (16-ga) and leg length range required; using incorrect staples can compromise hold and tool performance
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Even though lighter than some heavy-duty tools, extended use still benefits from ergonomic consideration and breaks to reduce fatigue
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For extremely thick materials or very heavy duty industrial applications, confirm that the staple leg length and drive capability align with your material stack — if not, a larger-frame model may be more appropriate
