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Standard Basis For Nuts
Mar 18, 2018

The nuts are based on the standard of GB, DIN, ISO, JIS, and ASTM/ANSI. Among them, the national standard, the German standard, the daily standard M (for example, M8, M16), the American system and the English system use fractions or # to indicate the specifications (e.g., 8#, 10#, 1/4, 3/8).

Nut commonly used national standard.

Type GB41 Ⅰ hexagonal nut, class C

Type GB6170 Ⅰ hexagonal nut, grade A and B

Type GB6171 Ⅰ hexagonal nut, fine teeth, A and B

GB6172 hexagonal thin nut - A, B - chamfer.

GB6173 hexagon thin nut -- fine teeth -- A and B.

GB6174 hexagonal thin nut -- class B -- no chamfer Angle.

Type GB6175 Ⅱ hexagonal nut, grade A and B

Type GB6176 Ⅱ hexagonal nut, fine thread - A and B

GB6177 hexagon flange nut - A class.

GB55 hexagonal thick nut.

GB56 hexagon super thick nuts.

GB1229 large hexagon nut (high strength for steel structure)