Unique Bargains M3x12mm Thread Zinc Plated Knurled Round Head Thumb Screws Silver Blue 20pcs
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Description
Knurled head provides extra grip for manual tightening.?Usually found on thumb screws a knurled surface on the head gives a better gripping surface making it easier to tighten or loosen fasteners manually.? Thumb screws are designed to be tightened and...
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