TRUSCO U-Nut Trivalent Chromate M20 x 2.5 2 Pieces B769-0020 1 PK

Catalog number: B769-0020 Features: * A metal friction ring (special spring) comes into contact with the threads of the bolt, generating a function that increases the torque of the threaded portion, providing an anti-loosening effect. * Complies with tests conforming to the US aerospace standards NAS3350 and 3354. * Heat-resistant, vibration-resistant, and reusable product. Applications: * Used in places where bolts are likely to loosen when tightened. ●Used in a wide range of industries, from steel structures such as railways and bridges to cars, motorcycles, and industrial machinery. Specifications: ●Nominal diameter: M20 x 2.5 ●Two-sided width dimension (mm): 30 ●Height (mm): 17.5 ●Nut type: Anti-loosening nut ●Dimension (mm) e: 34.6 ●Dimension (mm) m: 17.5 ●Dimension (mm) s: 30 ●Package: Bolt-on pack (blister) Material/Finish: ●Steel (SS400) ●Surface treatment: Trivalent chromate finish ●Friction ring: Stainless steel (SUS301)