4.2mm X 13mm Flange Head Phillips Self Drilling Screws, Modified Truss Head Zinc Plated Steel Screws, Fine Thread, Pan Head Pozi Screws for Sheet Metal, Pasterboard and Wood (50 pcs) : Amazon.co.uk:
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TIMCO Window Fabrication Screws Pan PH Self-Tapping Thread Self-Drilling Point Zinc - 4.2 x 13 (