Surface Treatment:
Some screws may be galvanized and other surface treatments to improve corrosion resistance.
Features:
The flat - head design of the knurled flat - head screw makes the surface relatively flat after installation, and will not protrude too much, which is suitable for some occasions where the surface flatness is required. The knurling treatment on the surface increases the friction, making it easy to tighten or loosen by hand without tools, which is convenient to operate. Moreover, it has high dimensional accuracy, which can ensure a good fit with nuts or connected parts.
Applications:
It is widely used in furniture manufacturing to connect various parts of furniture, such as the assembly of tables and chairs. In the field of electronic equipment, it can be used to fix electronic components and casings, which is convenient for disassembly and maintenance. In some small mechanical equipment or instruments, knurled flat - head screws are also often used for the connection and fixation of components. Because it can be operated without tools, it is convenient for daily debugging and maintenance.
| Screw Thread | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | ||||
| d | |||||||||||||
| P | Pitch | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | |||
| dk | (before knurled) | max | 7 | 8 | 9 | 11 | 12 | 16 | 20 | 24 | 30 | ||
| min | 6.78 | 7.78 | 8.78 | 10.73 | 11.73 | 15.73 | 19.67 | 23.67 | 29.67 | ||||
| k | max | 4.7 | 5 | 5.5 | 7 | 8 | 10 | 12 | 16 | 20 | |||
| min | 4.52 | 4.82 | 5.32 | 6.78 | 7.78 | 9.78 | 11.57 | 15.57 | 19.48 | ||||
| r | min | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | |||
| r1 | ≈ | 2.24 | 2.8 | 3.5 | 4.2 | 5.6 | 7 | 8.4 | 11.2 | 14 | |||
| c | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.5 | 0.5 | 0.8 | 0.8 | ||||
| Weight of per 1000 steel products(≈kg) | - | - | - | - | - | - | - | - | - | ||||
Surface Treatment:
Some screws may be galvanized and other surface treatments to improve corrosion resistance.
Features:
The flat - head design of the knurled flat - head screw makes the surface relatively flat after installation, and will not protrude too much, which is suitable for some occasions where the surface flatness is required. The knurling treatment on the surface increases the friction, making it easy to tighten or loosen by hand without tools, which is convenient to operate. Moreover, it has high dimensional accuracy, which can ensure a good fit with nuts or connected parts.
Applications:
It is widely used in furniture manufacturing to connect various parts of furniture, such as the assembly of tables and chairs. In the field of electronic equipment, it can be used to fix electronic components and casings, which is convenient for disassembly and maintenance. In some small mechanical equipment or instruments, knurled flat - head screws are also often used for the connection and fixation of components. Because it can be operated without tools, it is convenient for daily debugging and maintenance.
| Screw Thread | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | ||||
| d | |||||||||||||
| P | Pitch | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | |||
| dk | (before knurled) | max | 7 | 8 | 9 | 11 | 12 | 16 | 20 | 24 | 30 | ||
| min | 6.78 | 7.78 | 8.78 | 10.73 | 11.73 | 15.73 | 19.67 | 23.67 | 29.67 | ||||
| k | max | 4.7 | 5 | 5.5 | 7 | 8 | 10 | 12 | 16 | 20 | |||
| min | 4.52 | 4.82 | 5.32 | 6.78 | 7.78 | 9.78 | 11.57 | 15.57 | 19.48 | ||||
| r | min | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | |||
| r1 | ≈ | 2.24 | 2.8 | 3.5 | 4.2 | 5.6 | 7 | 8.4 | 11.2 | 14 | |||
| c | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.5 | 0.5 | 0.8 | 0.8 | ||||
| Weight of per 1000 steel products(≈kg) | - | - | - | - | - | - | - | - | - | ||||
