In terms of internal hexagon, there are two versions of the national standard, one is GB70-76, the 76 version, and the other is GB70-85, the 85 version. Therefore, attention should be paid to the differences in actual business operations: GB70-85 and DIN912 completely coincide, so there is no difference in the use of the new standard, mainly the difference between GB70-76 and DIN912: for M8 series of internal hexagon products, the round head diameter of GB70-76 is 12.5 mm, which is smaller than 13.27 mm of DIN912, For M10 series hexagonal socket products, the round head diameter of GB70-76 is 15MM, which is smaller than 16.27 of DIN912; for M12 series hexagonal socket products, the round head diameter of GB70-76 is 18MM, which is smaller than 18.27 of DIN912; for M16 and M20 series hexagonal socket products, the round head diameter of GB70-76 is 0.33MM, which is 24MM and 30MM, respectively. For DIN912, it is 24.33MM and 30.33MM respectively. In addition, the width of the inner opposite side between the hexagon socket of the old standard and the German standard varies due to different standards. The inner opposite side of GB70-76 is smaller, which should also be noted in business operations.

In addition, there are some differences between carriage screws that may be used at ordinary times. Here is also a description. In the national standard, there are two standards for carriage screws, namely GB12 (small half round head square neck screws) and GB14 (large half round head square neck screws). The German standard DIN603 is also commonly used in the market at ordinary times. Now we distinguish the three: for round necks, when comparing the same specification, it is: GB12<GB14<DIN603<SPAN>. Usually, when using carriage screws, the head and neck are required to be large and thick, so DIN603 carriage screws fully meet the requirements.

Founded in the year 2009, Jiaxing Reegu Hardware Product Co., Ltd. Enjoys the convenient transportation: it's located in haiyan Tongyuan Industrial Park, contiguous to the cross-sea hangzhou bay bridge & just 100 kms far from hangzhou xiaoshan airport.

Our company covers an area of about10000 square meters & employs more than 80 workers. All the time, our company keeps top production technology, advanced production equipments, best design capacity. Under the leading system & concept in quality control, our company easily passed the iso 9001:2001 quality system certification. In order to engage in the production & development of the rivet nuts, our company pumped an enormous sum of money into buying many sets of automatic molding machines & related equipments from taiwan in theyear 2011. Now via these talents & facilities, our company can totally guarantee the product quality & production efficiency.