PEEK Hex Nut, #2-56 (Pack of 5)

Most often used on machine screws and threaded rod, these general purpose nuts are for low-strength assemblies. Hex Nuts have flat tops with chamfered corners; bottoms may be flat or chamfered. Hex drive systems are driven with a wrench.Polyetheretherketone (PEEK) is a superpolymer, or high performance thermoplastic which has excellent chemical resistance and is rated for continuous service to 464 degrees Fahrenheit. It has the best fire safety rating of all thermoplastics. It can be radiation sterilized, tolerating radiation to 1100 M rads without undergoing significant change. The Peek used in these fasteners has been reinforced with 30% glass fibers which improves tensile strength to 22,600 psi (pounds per square inch.). Peek resists water absorption, absorbing 0.11% when exposed to water for 24 hours. Peek is extremely impact resistant, rated at 13.6 foot pounds (on the Izod Impact Scale), which compares favorably against Nylon 6/6 at 3 foot pounds. Peek is below average in terms of dielectric strength, for a plastic, with a rating of 175 volts/millimeter (compared to Nylon with a rating of 550 volts/millimeter).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.

• Hex Nuts are appropriate for use in low-strength assemblies
• PEEK is suitable where high temperature, strength, and chemical resistance are desirable
• Drive system is a hexagon-shaped head
• Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads
• Ensure a lasting hold for any project