Tommy screws with fixed clamping bolts produced by Xiaoguo® are made of strong materials such as carbon steel and are often used in industrial equipment.These screws are manufactured in China and undergo strict quality control.
Tommy screws with fixed clamping bolts are different from ordinary screws. This kind of screw has a dedicated drive head, which looks somewhat like an Allen socket, but has a larger and thicker opening. It can only be turned with the matching special tools.
The Tommy screw has a powerful clamping force. In the manufacturing of industrial equipment, for instance, the connection between the worktable and the bed of large machine tools requires such screws that can provide strong clamping force. When machine tools are processing parts, they generate significant cutting forces and vibrations. If the connections are not firm, the worktable may shift, affecting the processing accuracy. The Tommy screws with fixed clamping bolts can tightly clamp the worktable and the bed together, ensuring the stability and reliability of the machine tool during operation and processing qualified parts.
The Tommy screws can install the single-lens reflex camera onto the slide rail. Screw the clips onto the base of the slide rail, place the camera board on the bolts, and then tighten them by hand. The fixing bolts will prevent rotation and keep the camera level. They enable you to quickly adjust the position of the device during the shooting process.
Mon | M6 | M8 | M10 | M12 | M16 | M20 |
P | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
dk | 12 | 14 | 18 | 20 | 24 | 30 |
d1 | 5 | 6 | 8 | 10 | 12 | 16 |
dp max | 4.5 | 6 | 8 | 8 | 12 | 15.5 |
dp min | 4.425 | 5.925 | 7.91 | 7.91 | 11.89 | 15.39 |
ds max | 4 | 5.4 | 7.2 | 7.2 | 11 | 14.4 |
ds min | 3.8 | 5.2 | 7 | 7 | 10.8 | 14.2 |
k | 10 | 12 | 14 | 18 | 20 | 28 |
L1 | 50 | 60 | 80 | 100 | 120 | 140 |
Ls | 10 | 15 | 20 | 20 | 20 | 20 |
k1 | 5 | 6 | 7 | 9 | 10 | 14 |
z | 6 | 7.5 | 9 | 10 | 12 | 14 |
z1 | 2.5 | 3 | 4.5 | 4.5 | 5 | 5.5 |
The Tommy screws with fixed clamping bolts have a strong clamping force, a firm connection and decent anti-theft performance. It can only be turned with special tools. For ordinary people without tools, it is very difficult to remove it. If it is used on some public facilities, it can prevent it from being disassembled and damaged at will. It can hold things very tightly. Even if they are shaken or impacted, the connection points are not easy to loosen.