Hot Products
0102030405
China Suppliers Factory Direct Cross Galvanized Flat Head Self Tapping Screws - Custom Fasteners Available
Thread Specifications
| Thread specifications d |
ST2.2 | ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | ||
| P | Pitch | 0.8 | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| a | Max | 0.8 | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| dk | Max | 3.7 | 5.3 | 6.64 | 7.64 | 9.14 | 10.57 | 11.57 | |
| Min | 3.4 | 5 | 6.28 | 7.28 | 8.78 | 10.14 | 11.14 | ||
| k | Max | 1.6 | 2.4 | 2.6 | 3.1 | 3.7 | 4 | 4.6 | |
| Min | 1.4 | 2.15 | 2.35 | 2.8 | 3.4 | 3.7 | 4.3 | ||
| dc | h15 | Max | 5 | 7 | 8 | 9 | 10 | 12.5 | 14 |
| Min | 4.52 | 6.42 | 7.42 | 8.42 | 9.42 | 11.8 | 13.3 | ||
| s | Min | 0.3 | 0.5 | 0.8 | 0.8 | 0.8 | 1 | 1 | |
| y | C type | 2 | 2.6 | 3.2 | 3.7 | 4.3 | 5 | 6 | |
| F, FT type | 1.6 | 2.1 | 2.5 | 2.8 | 3.2 | 3.6 | 3.6 | ||
| Slot Number | 0 | 1 | 2 | 2 | 2 | 3 | 3 | ||
| M | ≈ | 1 | 3 | 3.9 | 4.4 | 4.9 | 6.4 | 6.9 | |
| Insert depth / maximum | 0.85 | 1.4 | 1.4 | 1.9 | 2.4 | 2.6 | 3.1 | ||
| Insert depth / minimum | 1.2 | 1.8 | 1.9 | 2.4 | 2.9 | 3.1 | 3.6 | ||
Cross galvanized flat head self tapping screw is a mechanical connecting component with the following functions and characteristics:
Key Features & Benefits
-
⚡Good Fastening Performance The cross large flat head self tapping screws are made of high-strength materials, which can effectively tighten different components together and maintain the stability of the equipment.
-
🔧Easy to Disassemble With its special head design, it can be easily tightened or disassembled using a screwdriver, saving the step of pre punching, making it more convenient to use and time-saving.
-
🛡Strong Corrosion Resistance Cross shaped flat head self tapping screws are usually made of high-quality materials, and the surface is chemically treated to form a black galvanized oxide film, which has good rust and anti-corrosion effects and can be used for a long time in harsh environments.
-
⚙Simple Structure Composed of the head, shaft, and threaded parts, easy to manufacture and use.
-
🌎Widely Applicable It has a wide range of applications in mechanical equipment, building structures, furniture manufacturing, electronic products, aerospace and other fields.
-
💪Greater Strength The flat cross shaped head allows the cross shaped flat head self tapping screw to better engage with the base material, making the connection more stable and reliable, with greater load-bearing capacity, and better tensile and shear resistance than traditional screws.
-
🔒Higher Stability The flat cross shaped head makes the connection more stable and reliable, reducing the possibility of loosening.
Frequently Asked Questions (FAQ)
Q
What materials are cross galvanized flat head self tapping screws made of?
These screws are made of high-strength materials, typically carbon steel or stainless steel. The surface undergoes a galvanizing chemical treatment that forms a protective oxide film, providing excellent rust and corrosion resistance for long-term use even in harsh environments.
Q
What thread sizes are available for these tapping screws?
These cross galvanized flat head self tapping screws are available in a range of standard thread sizes: ST2.2, ST2.9, ST3.5, ST4.2, ST4.8, ST5.5, and ST6.3, with pitches ranging from 0.8mm to 1.8mm to suit various application requirements.
Q
Do these screws require pre-drilled holes before installation?
No. One of the key advantages of self tapping screws is that they do not require pre-punching or pre-drilled holes. They can tap their own threads directly into the base material, saving installation time and simplifying the process.
Q
What are the typical application fields for these screws?
Cross galvanized flat head self tapping screws are widely used across many industries including mechanical equipment assembly, building and construction structures, furniture manufacturing, consumer electronics, and aerospace applications, thanks to their versatile sizing and strong fastening performance.
Q
How does the flat cross head design improve performance compared to traditional screws?
The flat cross shaped head allows for better engagement with the base material, resulting in a more stable and reliable connection. It offers greater load-bearing capacity and improved tensile and shear resistance compared to traditional screw designs, while also reducing the likelihood of loosening over time.
Q
Are these screws suitable for outdoor or corrosive environments?
Yes. The galvanized surface treatment forms a protective black oxide film that provides strong anti-rust and anti-corrosion properties. This makes the screws well-suited for use in outdoor settings, humid conditions, and other harsh or corrosive environments where long-term durability is required.