M4 X 40mm Screws
M5 Stainless Steel Machine Screws
15/06/2021
4 Inch Machine Screws
15/06/2021
M4 X 40mm Screws
The stainless steel hexagon socket head screw, the national standard code is GB70.1, can also be called the stainless steel hexagon socket screw (but the first "stainless steel cylindrical head hexagon socket screw" is the most standard). Regarding the materials of stainless steel hexagon socket screws, there are nothing more than two kinds, one is SUS304, the other is SUS316, and in fact, there is another stainless steel material of SUS316L. There is a lot of information on the production materials of these kinds of stainless steel hexagon socket screws on the Internet, and we will not analyze their element components one by one. Mainly look at the production technical standards of different specifications of stainless steel hexagon socket screws and the size control range of the tolerances.Stainless steel hexagon socket screws Images
The minimum specification of stainless steel hexagon socket screws starts from M2 and ends with M20. This range is much smaller than the 12.9-grade hexagon socket screws series. The maximum specification of carbon steel hexagon socket screws is M48 mm. In any case, the standards and specifications have evolved freely from the market. There is no stainless steel hexagon socket screw larger than M20, which means that there are not many places in the market. If there is, we can also customize it. Let's get to the point and take a look at the production technical parameters of each specification of stainless steel hexagon socket screws:
Look at the three physical measurement drawings above. The specifications from left to right are M2/M3/M4. First look at the main technical parameters of M2. The cylinder head diameter of M2 is 4 mm (we don’t elaborate on the tolerance), cylindrical The height of the head is 2 mm, and the opposite side of its hexagon socket is 1.5 mm, which means that it needs to be installed with a 1.5 hexagon socket wrench. The dimensions we are talking about are the most important, and production must be Take it only as a standard. The actual measurement specification is M2*5mm, and other lengths can be selected. The middle specification is the actual measurement drawing of M3*6. The length of the 6 mm thread can be selected at will. Let’s take a look at several fixed parameters. The diameter of the cylinder head of M3 is 5.5 mm, and the height of the cylinder head is 3 mm. The opposite side of the hexagon is 2.5 mm, which is a little bigger compared to the M2 standard. So we have always said that although every type of screw looks the same, the manufacturing standards are completely different. Let’s look at the specifications of M4*6 on the far right. The diameter of the M4 cylinder head hexagon socket is 7 mm, the cylinder head height is 4 mm, and the opposite side of the hexagon socket is 3 mm. Is there a rule found for the cylindrical head of the stainless steel hexagon socket screw? The height is equal to the diameter of the thread, M4 thread, then its cylindrical head height is 4 mm, I don't know if it is a coincidence or the standard is made like this, we will then look at other specifications to see if it is the same.
Still starting from the specifications of the M5*10 stainless steel hexagon socket screw on the left, the cylinder head of M5 has a diameter of 8.5 mm, and the height of the cylinder head is 5 mm, and the opposite side of the inner hexagon is 4 mm. Use a 4 mm hexagon wrench to install , And the thread length of 10 mm can be selected according to the requirements of different lengths. The specification in the middle is M6*12, the diameter of the cylinder head is 10 mm, and the height of the cylinder head is 6 mm. It seems that the law has not changed. The height of the cylinder head is equal to the thread diameter. Its installation tool needs to use a hexagonal wrench with the opposite side of 5. Similarly, the length is free to choose. The specification on the far right is M8*16. According to statistics, the M8 series is the most used in the standard of stainless steel hexagon socket screws. Let's take a look at its parameters. The cylinder head diameter is 13 mm, and the cylinder head height is of course 8 mm, so far, the law of the same height as the thread diameter has always existed. It needs to be installed and used with a tool with an inner hexagon of 6 mm on the opposite side.
In fact, the most commonly used stainless steel hexagon socket screw specifications also include M10 and M12 specifications. The specification of the actual measurement drawing on the left is M10*20, the diameter of the cylinder head is 16 mm, the height of the cylinder head is 10 mm, and the opposite side of the hexagonal socket The length of the thread is 8 mm, and the length of the thread is 20 mm. Choose a shorter or longer standard according to the design. The actual measurement in the middle is the M12*25 stainless steel hexagon socket screw, the cylinder head diameter is 18 mm, and the cylinder head height is still 12 mm, which is consistent with the thread diameter. The installation tool is a 10 mm hex wrench. The specification on the far right is the screw of M14*55. In the stainless steel hexagon socket screw standard, the specification of M14 is particularly rarely used. It may not be in stock at all times, and other specifications are in stock. The diameter of the cylinder head of M14 is 21 mm, the height of the cylinder head is 14 mm, the opposite side of the inner hexagon of the cylinder head is 12 mm, and the thread length is selected according to the needs.
The above two types are the largest specifications in stock in the standard stainless steel hexagon socket screws. All stainless steel hexagon socket screws exceeding M20 mm are not in stock and need to be customized. The diameter of the cylinder head of the M16 is 24 mm, the height of the cylinder head is 16 mm, and the installation tool is a 14 mm hexagonal wrench on the opposite side. The final specification is M20*70, the cylindrical head has a diameter of 30 mm, and a height of 20 mm. The hexagonal wrench needs to use a tool with an opposite side of 17 mm. These two large-size stainless steel hexagon socket screws have very high requirements for production equipment, and the prices for the production of these two specifications are more than three million yuan, and a certain strength manufacturer is required to produce them.
Look at the three physical measurement drawings above. The specifications from left to right are M2/M3/M4. First look at the main technical parameters of M2. The cylinder head diameter of M2 is 4 mm (we don’t elaborate on the tolerance), cylindrical The height of the head is 2 mm, and the opposite side of its hexagon socket is 1.5 mm, which means that it needs to be installed with a 1.5 hexagon socket wrench. The dimensions we are talking about are the most important, and production must be Take it only as a standard. The actual measurement specification is M2*5mm, and other lengths can be selected. The middle specification is the actual measurement drawing of M3*6. The length of the 6 mm thread can be selected at will. Let’s take a look at several fixed parameters. The diameter of the cylinder head of M3 is 5.5 mm, and the height of the cylinder head is 3 mm. The opposite side of the hexagon is 2.5 mm, which is a little bigger compared to the M2 standard. So we have always said that although every type of screw looks the same, the manufacturing standards are completely different. Let’s look at the specifications of M4*6 on the far right. The diameter of the M4 cylinder head hexagon socket is 7 mm, the cylinder head height is 4 mm, and the opposite side of the hexagon socket is 3 mm. Is there a rule found for the cylindrical head of the stainless steel hexagon socket screw? The height is equal to the diameter of the thread, M4 thread, then its cylindrical head height is 4 mm, I don't know if it is a coincidence or the standard is made like this, we will then look at other specifications to see if it is the same.
Still starting from the specifications of the M5*10 stainless steel hexagon socket screw on the left, the cylinder head of M5 has a diameter of 8.5 mm, and the height of the cylinder head is 5 mm, and the opposite side of the inner hexagon is 4 mm. Use a 4 mm hexagon wrench to install , And the thread length of 10 mm can be selected according to the requirements of different lengths. The specification in the middle is M6*12, the diameter of the cylinder head is 10 mm, and the height of the cylinder head is 6 mm. It seems that the law has not changed. The height of the cylinder head is equal to the thread diameter. Its installation tool needs to use a hexagonal wrench with the opposite side of 5. Similarly, the length is free to choose. The specification on the far right is M8*16. According to statistics, the M8 series is the most used in the standard of stainless steel hexagon socket screws. Let's take a look at its parameters. The cylinder head diameter is 13 mm, and the cylinder head height is of course 8 mm, so far, the law of the same height as the thread diameter has always existed. It needs to be installed and used with a tool with an inner hexagon of 6 mm on the opposite side.
In fact, the most commonly used stainless steel hexagon socket screw specifications also include M10 and M12 specifications. The specification of the actual measurement drawing on the left is M10*20, the diameter of the cylinder head is 16 mm, the height of the cylinder head is 10 mm, and the opposite side of the hexagonal socket The length of the thread is 8 mm, and the length of the thread is 20 mm. Choose a shorter or longer standard according to the design. The actual measurement in the middle is the M12*25 stainless steel hexagon socket screw, the cylinder head diameter is 18 mm, and the cylinder head height is still 12 mm, which is consistent with the thread diameter. The installation tool is a 10 mm hex wrench. The specification on the far right is the screw of M14*55. In the stainless steel hexagon socket screw standard, the specification of M14 is particularly rarely used. It may not be in stock at all times, and other specifications are in stock. The diameter of the cylinder head of M14 is 21 mm, the height of the cylinder head is 14 mm, the opposite side of the inner hexagon of the cylinder head is 12 mm, and the thread length is selected according to the needs.
The above two types are the largest specifications in stock in the standard stainless steel hexagon socket screws. All stainless steel hexagon socket screws exceeding M20 mm are not in stock and need to be customized. The diameter of the cylinder head of the M16 is 24 mm, the height of the cylinder head is 16 mm, and the installation tool is a 14 mm hexagonal wrench on the opposite side. The final specification is M20*70, the cylindrical head has a diameter of 30 mm, and a height of 20 mm. The hexagonal wrench needs to use a tool with an opposite side of 17 mm. These two large-size stainless steel hexagon socket screws have very high requirements for production equipment, and the prices for the production of these two specifications are more than three million yuan, and a certain strength manufacturer is required to produce them.