7-20 x 7/16 Philips Pan Head Self Drilling Framing Screw ...
These 7/16' length #2 Phillips drive Pan Head black phosphate coated Self-Drilling Framing screws are #6-20 (20 threads per inch) and #7-19 with #2 drilling Point. Phosphate is a conversion coating used to add mild corrosion resistance and for lubricity. Meets F.I.P for torsional strength and drill …
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