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When we first started using screws, we generally did not pay much attention to the torque of the screws. However, if the screw is not in use during use, we will pay attention to whether the screw has insufficient torque and insufficient strength. Then you need to reorder a batch of screws that meet the requirements to assemble. So, what is the torque of the pan head machine screw?
Because the torque of the pan head machine screw of different materials is different. What we are talking about today is the torque of carbon steel. For carbon steel, their torque is different depending on the strength and the diameter of the thread.
Torque of pan head machine screw (metric coarse thread)
| 3.6 | 5.6 | 6.9 | 8.8 | 10.9 | 12.9 | A/F | |
| mm | N.m | N.m | N.m | N.m | N.m | N.m | mm |
| 2 | 0.12 | 0.16 | 0.31 | 0.37 | 0.52 | 0.63 | 4 |
| 3 | 0.44 | 0.59 | 1.13 | 1.34 | 1.88 | 2.26 | 5.5 |
| 4 | 1 | 1.34 | 2.6 | 3.04 | 4.31 | 5.15 | 7 |
| 5 | 1.96 | 2.65 | 5.1 | 6.03 | 8.48 | 10.2 | 8.9 |
| 6 | 3.43 | 4.51 | 8.73 | 10.3 | 14.71 | 17.65 | 10 |
| 8 | 8.24 | 10.79 | 21.57 | 25.5 | 35.3 | 42.17 | 13.14 |
| 10 | 16.7 | 21.57 | 42.17 | 50.01 | 70.61 | 85.32 | 15.17 |
To achieve different strength levels, the carbon steel material used is different. For example, grade 8.8, generally use 10B21, 10.9 grade generally uses 10B21 or 435, 12.9 strength of only 435 materials can reach this strength.
If you want to custom 4 inch self tapping screws, please feel free to contact us at annie.li@szsst88.com
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Skype: kalyn qin M: +86 18124507113 Tel: +86 0755-85296744 Email: annie.li@szsst88.com Add: No. 11, Dinghou Road, Dongfang Community, Songgang Street, Baoan District, Shenzhen, Guangdong, China
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10 月-08-2019
kalyn
+86 13143444311
sst@szsst88.com
