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meaning they have a fully threaded body and a flat undercut head
Made of durable steel and coated with a protective zinc layer
and the zinc yellow finish offers corrosion resistance
These screws are available in a variety of lengths to accommodate different thicknesses of materials
while the bugle head design countersinks smoothly into drywall for a flush finish
6-20 x 1/4 Unslot Indent Hex Washer Serrated Self Tap Screw Type B Full Thread Zinc CH5OF meaning they have a fullyThese 6 20 x 1 4" unslotted indented hex washer serrated self tapping screws are Type B full thread screws made of zinc. They have a hex washer head with an indented drive and a serrated point. These screws are designed to tap their own threads in metal, wood, and plastic. They are commonly used in automotive, construction, and manufacturing applications.
