Catalog number: B69-0004 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, vibrates, and is reusable. Applications: ●Used in places where bolts are likely to loosen when tightened. Specifications: ●Nominal diameter: M4 x 0.7 ●Two-sided width dimension (mm): 7 ●Height (mm): 3.8 ●Nut type: Anti-loosening nut ●Dimensions (mm) e: 8.1 ●Dimensions (mm) m: 3.8 ●Dimensions (mm) s: 7 ●Package: Bolt-on pack (blister) Material/Finish: ●Steel (SS400) ●Surface treatment: Unichrome plating finish ●Friction ring: Stainless steel (SUS301)
