Black American heavy-duty A194-7L hex nut

Bolt, Full Thread Stud, Stud, Stud Bolt, Threaded Rod

Common national standards for nuts
GB41 Type I Hexagon Nut - Grade C
GB6170 Type I Hexagon Nut - Grade A and B
GB6171 Type I Hexagon Nut - Fine Teeth - Grades A and B
GB6172 Hexagon thin nuts - Grade A and B - Chamfer
GB6173 Hexagon thin nuts - Fine pitch - Grade A and B
GB6174 Hexagon thin nuts - Grade B - without chamfer
GB6175 Type II Hexagon Nut - Grade A and B
GB6176 Type II Hexagon Nut - Fine Teeth - Grades A and B
GB6177 Hexagon flange nuts - Grade A
GB55 hexagonal thick nut
GB56 hexagonal extra thick nut
GB1229 Large Hexagon Nut (High Strength for Steel Structures)

   Nuts are parts that tightly connect mechanical equipment. Nuts are parts that tightly connect mechanical equipment and can only be connected together through internal threads, nuts of the same specification, and bolts,

   We live in a rich and colorful world, surrounded by various excellent mechanical products that are connected together through screws, nuts, or bolts. Nuts are widely used in industries and fields such as electronics and electronics, automobiles, railways, ships, construction, machinery, and medical equipment.

    In industries such as automobiles, mechanical manufacturing, and rail transit, bolts and inserts generate frictional resistance to prevent detachment,ASTM A194 7L Heavy Hex Nut,ASTM A194 7L Heavy Hex Nuts,ASTM A194 Ptfe Heavy Hex Nut

  American thread series refers to the thread standards formulated according to the American National Standards Institute (ANSI), of which UNC, UNF and UNEF thread series are the most commonly used.