304 stainless steel cross countersunk head screw set used for machine parts
Connection: Common Bolt
Head Style: round
Standard: DIN, ANSI, GB, BSW
Grade:ss304/ss316
The 304 stainless steel cross countersunk head screw set is a reliable and durable option for securing machine parts. This type of screw is known for its corrosion resistance and strength, making it a popular choice in various industrial and manufacturing applications. The cross countersunk head design ensures a flush finish when installed, minimizing the risk of snagging or catching on surrounding surfaces. These screws are also easy to install and remove, making maintenance and repairs more efficient. Whether you are assembling new machinery or replacing worn parts, the 304 stainless steel cross countersunk head screw set is a dependable choice for ensuring secure and long-lasting connections.
L: represents the total length of the screw
d: represents the thread diameter
dk: represents the head diameter
k: represents the thickness of the head
| Specifications consist of a*L such as: M4*20 (thread diameter 4mm*length 20mm) including head length | ||||||
| Size | Dia(d) | Thread pitch(p | Head diameter Max(dk) | Min(dk) | Head thickness(k) | |
| M1 | 1.0 | 0.25 | 2 | 1.7 | 0.6 | |
| M1.2 | 1.2 | 0.25 | 2.1 | 1.8 | 0.9 | |
| M1.4 | 1.4 | 0.3 | 3 | 2.6 | 1.0 | |
| M1.6 | 1.6 | 0.35 | 3.2 | 2.7 | 1.2 | |
| M1.7 | 1.7 | 0.35 | 3.3 | 2.8 | 1.2 | |
| M2 | 2.0 | 0.4 | 3.8 | 3.5 | 1.3 | |
| M2.5 | 2.5 | 0.45 | 4.7 | 4.4 | 1.5 | |
| M3 | 3.0 | 0.5 | 5.5 | 5.2 | 1.7 | |
| M4 | 4.0 | 0.7 | 7.6 | 7.1 | 2.6 | |
| M5 | 5.0 | 0.8 | 8.9 | 8.5 | 3.1 | |
| M6 | 6.0 | 1.0 | 11.2 | 10.5 | 3.6 | |
| M8 | 8.0 | 1.25 | 14.7 | 14.1 | 4.5 | |
| M10 | 10.0 | 1.5 | 18.3 | 17.5 | 6.0 | |
| The above data is a single batch of manual measurement data, there are certain errors, please be careful if you mind! Unit: mm | ||||||
"Drilling tail self-tapping screws" are also called "drilling tail screws", "drilling tail screws" and "self-drilling screws". Northerners also call them "dovetail screws". English: SELF DRILLING SCREWS. According to the implementation standards, drill tail screws can be divided into: national standard GB/T, German standard DIN, Japanese standard JIS, and standard ISO.
It can also be divided into the following categories according to use and shape:
1. Cross recessed pan head self-drilling and tapping screws. Implementation standard: GB/T 15856.1-2002 and has the following specifications: (also called round head drill tail)
2. Cross recessed countersunk head self-drilling and self-tapping screws. Implementation standard: GB/T 15856.2-2002. It has the following specifications: (also known as flat head drill tail, salad head
3. Cross recessed countersunk head self-drilling and tapping screws. Implementation standard: GB/T 15856.3-2002 has the following specifications: This specification is a semi-countersunk head and is rarely used in the market.
4. Hexagonal flange surface self-drilling and self-tapping screws. Implementation standard: GB/T 15856.4-2002 and have the following specifications: (also called hexagonal Dahua drill tail, which is a commonly used and large number of specifications in drill tail screws.)
According to the material, it can be divided into: steel 1022A, stainless steel 410, stainless steel 304
1. Carbon steel drill tail screws, 1022A. Standard heat-treated steel can be used as a material for the production of drill tail screws. After heat treatment, the surface hardness is HV560-750 and the core hardness is HV240-450. Ordinary surface treatment is easy to rust, has high hardness and low cost. .
2. Stainless iron drill tail screws, 410, can be heat treated, and their rust resistance is better than carbon steel but worse than stainless steel.
3. Stainless steel drill tail screws, 304, cannot be heat treated, have strong anti-rust ability, low hardness, and high cost. They can only drill aluminum plates, wooden boards, and plastic boards.
4. Composite drill tail screws, the drill bit is made of carbon steel, and the thread and head are made of 304 stainless steel.
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