\No. 10 Zinc Plated Steel Pan Head Square Drive Self Drilling Screws
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No. 10 Zinc Plated Steel Pan Head Square Drive Self Drilling Screws
L. H. Dottie
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Dottie self-drilling square drive pan head screws drill a hole and tap threads in one operation. The drilling operation removes metal and can be used with heavier gauge metals. Length is determined from the base of the fastener head.