Self Drilling Screws - Wing Tip

Self Drilling Screws - Wing Tip Countersunk Ribbed Head, 6 small ribs on the countersink to assist completion of countersinking Coarse Thread, Coarse self-tapping thread Self Drill Point, For drilling into metals without the need for pre-drilling inc. wings Phillips recess wing tip self-drilling screws for light section steel Wing Tip No.3 S/Drill - Zinc Plated Finish

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