The Bostitch 21684B staple gun is a light pneumatic tacker for 84 series staples, with a crown of about 1/2" and legs from 5/32" to 5/8". Bostitch's spec sheet lists it at 0.83 kg (about 1.8 lb) with an aluminum housing, so it's comfortable for long upholstery and furniture runs.
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Key Features
- 84 series staples: 12.3 mm (about 1/2") crown.
- 5/32" to 5/8" legs: 4 to 16 mm, from thin fabric to layered material.
- Lightweight design: about 1.8 lb, with a durable aluminum housing that's easy on your hand over a long job.
- Low air use: 0.17 liters per shot at 5.6 bar.
- Bottom loading: quick to reload.
- Rear exhaust: blows air away from the work.
Specifications
- Model: Bostitch 21684B
- Type: pneumatic fine wire tacker
- Staple series: 84
- Crown: 12.3 mm (about 1/2")
- Leg length: 4 to 16 mm (5/32" to 5/8")
- Operating pressure: 80 to 120 psi
- Air use: 0.17 L per shot at 5.6 bar
- Weight: 0.83 kg (about 1.8 lb)
- Size: 221 x 150 x 40 mm
- Housing: aluminum
What This Bostitch Air Stapler Is Used For
- Upholstery: fabric, webbing and padding on wood frames.
- Furniture: dust covers, backs and seat bottoms.
- Light fastening: thin panels, trim backing and similar shop work.
Choosing the Right Staples
This Bostitch tacker takes 84 series staples only. The 80 and 71 series used by other fine wire tackers have a different crown and wire, so they won't feed. Pick a leg long enough to go through your material and hold in the frame, up to the 5/8" maximum, and review a test piece before a full run.
How to Load and Use the Bostitch Air Staple Gun
- Disconnect the air before loading.
- Open the magazine from the bottom and drop in a strip of 84 series staples.
- Close the magazine until it latches.
- Set your regulator between 80 and 120 psi and connect the air.
- Hold the nose flat on the work and pull the trigger. Start at the low end of the pressure range and raise it only until staples sit flush.
Care, Maintenance and Troubleshooting
Add a few drops of pneumatic tool oil to the air inlet each day you use it, unless your air line already has an oiler. Drain water from your compressor tank often. To clear a jam, disconnect the air, open the magazine, remove the strip and pull out the bent staple. If staples stand up, raise the pressure a little or try a shorter leg. If they sink too deep, lower it.
Is a Bostitch Pneumatic Staple Gun Right for Upholstery?
Yes, this is what a Bostitch staple gun like the 21684B is built for. A light air tool fires fast and gives you even depth staple after staple, which is hard to match with a manual upholstery staple gun on a big job. You will need a compressor, a regulator and a hose. Review your air setup before you order so the tool is ready to work the day it arrives.
Other Bostitch Fine Wire Tackers
Bostitch, a Stanley Black & Decker brand, makes tackers for several staple series, so picking the right tool comes down to the staple you use. If you already stock 80 or 71 series staples, a tool built for those may be a better fit: the Bostitch 21680B-ALM takes 80 series and the Bostitch 21671B takes 71 series. For another 84 series tool, see the Fasco F1B 84-16.
Why Buy From Staplers and Staples
- Same-day shipping on orders placed by 4:00 PM EST.
- In-house tool repair if your tool ever needs service.
- Fine wire tackers from several brands, so you can compare before you add one to your order.
- Based in Sycamore, Illinois.
FAQ
What staples does the Bostitch 21684B use?
84 series staples with a crown of about 1/2" (12.3 mm) and legs from 5/32" to 5/8".
What air pressure does it need?
80 to 120 psi.
How much does it weigh?
About 1.8 lb (0.83 kg).
Is it the same as the Bostitch 21680B?
No. The 21680B takes 80 series staples, and the two staple series aren't interchangeable.
