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Washer face thumb screws are a one-piece screw with a cylindrically-shaped head, and a fully-threaded shank with a unified thread pitch. There is also a shoulder section that separates the two. The head is smooth and flat on the top, along with knurls on the side. The shoulder has two sections; the wider of the two serves as a washer face directly above the threaded shank.

RC Fasteners & Components is your #1 wholesale source for plain knurled thumb screws in stainless and aluminum. If you need other materials or platings, please contact us and we'll be happy to assist you.