TRUSCO U-Nut Trivalent Chromate M4 x 0.75 20 pcs B769-0004 1 PK

Catalog number: B769-0004 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 part and provides 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 fastened. ● Used in a wide range of industries, from steel structures such as railways and bridges to cars, motorcycles, and industrial machinery. 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: Trivalent chromate finish ● Friction ring: Stainless steel (SUS301)