Catalog number: B69-0020 Features: ●The metal friction ring comes into contact with the threads of the bolt, generating a function that increases the torque of the threaded portion and provides an anti-loosening effect. ●Complies with tests conforming to the US aerospace standards NAS3350 and 3354. ●This product is heat-resistant, vibrating, and reusable. Applications: ●Used in areas where bolts are likely to loosen when tightened. Specifications: ●Nominal diameter: M20 x 2.5 ●Two-sided width dimension (mm): 30 ●Height (mm): 17.5 ●Nut type: Anti-loosening nut ●Dimensions (mm) e: 34.6 ●Dimensions (mm) m: 17.5 ●Dimensions (mm) s: 30 ●Package: Bolt-on pack (blister) Material/Finish: ●Steel (SS400) ●Surface treatment: Unichrome plating finish ●Friction ring: Stainless steel (SUS301)
