The Bostitch 21671B-ALM is a high-capacity fine-wire pneumatic tacker built for production environments where reloads slow you down. With its extra-long magazine, two-function trigger (single fire or auto mode) and robust build, it keeps fast-paced work moving efficiently.
Key Features
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Dual-mode trigger: light squeeze for single staple, full squeeze for auto-fire up to 160 staples per minute
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Long magazine reduces reload frequency—holds over 390 staples
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Compatible with 3/8″ crown fine-wire staples, leg lengths from 5/32″ to 9/16″
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Durable construction (all metal body), at approximately 3.0 lbs tool weight
Specifications
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Staple Crown: 3/8″
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Staple Leg Length Range: 5/32″ – 9/16″
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Magazine Capacity: 390 staples
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Operating Pressure: 70–100 psi
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Tool Weight: 3.0 lbs
Why Choose This Tool?
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Ideal for high-cycle upholstery, cabinetry, packaging or furniture manufacturing where frequent staple reloads can interrupt throughput.
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The long magazine and dual-mode trigger let you adapt between high-speed auto mode and controlled single-fire precision without changing tools.
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Rugged build and fine-wire compatibility deliver long-term reliability in demanding production settings.
Things to Know Before Buying
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Requires a clean, well-regulated compressed air source capable of 70–100 psi; inadequate air supply will reduce drive power and proper staple setting.
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Must be used with 3/8″ crown fine-wire staples; using incorrect staples can result in mis-feeds or weak clinch.
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Even with a long magazine, operator ergonomics matter—nearly 3 lbs of tool weight and frequent use mean fatigue should be considered in continuous-use setups.
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For extremely thick or heavy-duty materials exceeding the 5/32″–9/16″ leg length range, consider whether a larger-frame tacker might be better suited.
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