Common Standards for National Standard Nuts
Datetime:2015.10.08 From:HanDan HaoQiang Fastener Manufacturing Co.,Ltd
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Handan Haoqiang Fastener Manufacturing Co., Ltd. is a professional manufacturer of all kinds of high-strength fasteners, which integrates scientific research, development, production and sales. Our company mainly produces nuts including British nuts, American nuts, national standard nuts, new national standard nuts, high strength nuts, thickened nuts, polished nuts, connecting nuts, flange nuts, anti-loosening nuts, wool nuts, national standard bolts and so on. The manufacturer of national standard nuts will briefly introduce the common national standards. Nuts are parts that are tightly connected with mechanical equipment. They can only be connected through internal threads, nuts of the same specifications and screws. For example, M4-0.7 nuts can only be matched with M4-0.7 nuts (in nuts, the inner diameter of M4 nuts is about 4mm, and the distance between 0.7 fingers and two threads is 0.7mm). Similarly, for example, a nut of 1/4-20 can only be matched with a screw of 1/4-20 (1/4 finger nut has an inner diameter of about 0.25 inches, and 20 fingers have 20 teeth per inch). Nut specifications generally have diameter of 4mm, 5mm, 6mm, 8mm, 10mm, 12mm and so on. Ordinary outer hexagonal nuts are widely used. Their characteristics are that the fastening force is relatively large. The disadvantage is that there should be enough operating space in the installation. The flexible wrench or open wrench can be used in the installation, or the wrench above glasses wrench needs a great deal. Operating space. The wool nut has no friction surface and spark-proof structure. It is seldom used in machinery. Ordinary outer hexagonal nuts are used for ordinary bolts. National Standards for Nuts Type GB41I Hexagon Nut-Class C GB6170 Type I Hexagonal Nuts-Class A and B GB6171 Type I Hexagonal Nut-Fine Teeth-Class A and B GB6172 Hexagonal Thin Nut-Class A, B-Chamfer GB6173 Hexagonal Thin Nut-Fine Teeth-Class A and B GB6174 Hexagonal Thin Nut-Grade B-No Chamfer Type GB6175II Hexagonal Nuts-Class A and B GB6176 Type II Hexagonal Nut-Fine Teeth-Class A and B Hexagonal Flange Nut GB6177-Class A GB56 six angle thick nut GB1229 large hexagonal nut (high strength for steel structure)
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