What size and type of nails does the SB-1664FN use?
The SB-1664FN uses SB16 series nails, which are 16-gauge fasteners ranging from 1" to 2-1/2" in length. Always use only recommended Bostitch fasteners, as Bostitch cannot assume responsibility for product performance if non-approved fasteners are used.
From the official Bostitch SB 1664fn manual, page 4
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