machine screw tensile strength
Different grades of screws have different tensile strengths. The grades of screws generally have 10 performance levels of 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, and 12.9. Now let’s take a look at the machine screw tensile strength of different grades.
Machine screw tensile strength is the maximum tensile load applied to a finished fastener before it is destroyed or at the same time it begins to break, divided by the “nominal stress cross-sectional area of the thread”.
Grade |
4.6 |
4.8 |
5.6 |
5.8 |
6.8 |
8.8 |
9.8 |
10.9 |
12.9 |
d≤16mm |
d>16mm |
machine screw tensile strength/MPa |
Metric |
400 |
500 |
600 |
800 |
900 |
1000 |
1200 |
min |
400 |
400 |
500 |
520 |
600 |
800 |
830 |
900 |
1040 |
1200 |
From the above table we can see that the higher the grade, the greater the tensile strength of the screw. When many customers have requirements for the machine screw tensile strength, they are worried that the screw produced by the manufacturer is not the tensile strength they want.
In general, the tensile strength of the screw is in accordance with the above. The screws produced by the manufacturer are also in accordance with this form. Unless you require a screw rating of 4.8, the tensile strength is 1200. This kind of thing can’t be done.
Shenzhen Shi shi tong screw manufacturers can produce the machine screw tensile strength of the corresponding grade of screw according to your requirements. If you want to order screws, please come to consult: annie.li@szsst88.com