The head of turned rough square head full thread screw is square, and the rough texture can help them be better embedded in the connector.Rough means that the screw has undergone preliminary forming processing, and the surface accuracy and smoothness are relatively rough compared to refined ones. Ensure the stability between the connecting parts. Our products come in various sizes. You can inquire about prices at any time.
Turned rough square head full thread screw can be used to fix rusty plow blades. Its full threads can firmly grip the worn holes. When installing, no other special tools are needed. You can tighten them easily.
The entire screw of rough square head full thread screw-turned is covered with threads all the way to the bottom of the square head. They are machined by machine turning. This square head is not easy to slip when turned with a wrench and is very practical.
Rough square head full thread screw can be used to connect wooden boards. For example, installing furniture such as bookshelves and wardrobes. If the furniture becomes loose after long-term use, you can choose them. A rough surface can prevent screws from rotating in the wood and extend the service life of the furniture.
Mon |
1-1/4 |
1-3/8 |
1-1/2 |
1-5/8 |
1-3/4 |
2 |
2-1/4 |
2-1/2 |
2-3/4 |
P | 7|9 | 8|6 | 6|8 | 5|8 | 5|7 | 4.5|7 | 4|6 | 4|6 | 3.5|6 |
k max |
0.83 | 0.92 | 1 | 1.08 | 1.17 | 1.33 | 1.5 | 1.67 | 1.83 |
k min |
0.79 | 0.88 | 0.96 | 1.02 | 1.11 | 1.27 | 1.42 | 1.59 | 1.75 |
s max |
1.86 | 2.05 | 2.22 | 2.41 | 2.58 | 2.76 | 3.15 | 3.55 | 3.89 |
s min |
1.815 | 2.005 | 2.175 | 2.365 | 2.52 | 2.7 | 3.09 | 3.49 | 3.83 |
r max |
0.04688 |
0.04688 |
0.04688 |
0.04688 |
0.04688 |
0.04688 |
0.0625 | 0.0625 |
0.0625 |
The selling point of turned rough square head full thread screw is that it can be tightened and is not prone to slipping. They fit tightly with the nuts or the connected materials. Even if you twist them hard, they are not easy to slip away. It won't loosen easily in places with strong vibrations.