galvanized self tapping screws with a semicircular head and a cross d slot and a press washer on a white background

background build chrome closeup construction cross dowel driver element engineering equipment fastener focus furniture galvanized gray group hardware head industrial industry instrument iron joiner jointing mechanic metal metallic oxide pattern press recess repair screw screwdriver screws selective self semicircular shaped sharp shiny silver slot spinning spiral steel tapping thread tool tools washer white wood work