DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Screw Nails for Sheet Metal
Also known as flat-head Type 21 screws, these fasteners drive like nails but hold with screwlike strength. The zinc-plated finish provides rust resistance. Use them in drilled and punched holes. The hole size should be slightly smaller than the shank diameter.