(25 Pezzi) 1/2-13x1 1/2 Grado 5 Esagonale Dentellato Flangia Bulloni Viti (FT) Zinco Trasparente
Grade 5 serrated flange bolts are commonly used in applications requiring high resistance to loosening due to vibration. The serrations under the flange grip the material surface, preventing back-off.