Automotive hardware encompasses non-functional, mechanically fastening components utilized throughout vehicle assembly. This category includes bolts, nuts, screws, washers, clips, and pins, securing systems like body panels, engines, transmissions, and interior trim. Materials commonly include carbon steel, alloy steel, and stainless steel, with varied coatings for corrosion resistance and specific torque retention. Key features involve thread type (metric, UNC, UNF), head style, drive type, and grade/strength marking for load capacity. Precise specification adherence is critical, as hardware dimensions and material properties directly impact joint integrity and structural safety.