Nickel Plated Brass Thumb Screw, Knurled Head, 1/4"-20, 1" Length (Pack of 100)

Thumb screws are designed to be tightened and loosened by hand. They come in a variety of head styles, but each includes an easy-grip head which allows for simple "by-hand" installation.Brass is rust proof, corrosion resistant and polishes to a rich, golden color. Brass is easily soldered and brazed and accepts plating readily. The typical composition is 70% Copper and 30% Zinc. Strength increases with a higher percentage of Zinc. 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. A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.

• Thumb Screws allow for simple "by-hand" installation
• Nickel Plated Brass is suitable where corrosion resistance and aesthetics are primary considerations
• Knurled head provides extra grip for manual tightening
• Tools not necessary for tightening or loosening
• Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads