PEEK (polyetheretherketone) is a high-performance plastic material that is known for its excellent mechanical and thermal properties. M1.6 is a metric screw thread size, and M1.6 screws, bolts, nuts, and washers made of PEEK may be used in a variety of applications where the combination of high strength and low weight is desired. M1.6 screws have a 1.6 millimeter diameter and a thread pitch of 0.35 millimeters. PEEK is a strong and stiff material that can withstand high temperatures, making it suitable for use in high-temperature environments. PEEK M1.6 nuts and washers are used to secure M1.6 screws and bolts in place. Washers are flat rings that are used to distribute the load of a fastener and to prevent damage to surfaces. Nuts are used to fasten bolts and screws together and are typically tightened using a wrench.