ISO7050 UNI6955 2.5mm Diameter Cross Recessed Countersunk Head Tapping Screws Carbon Steel

Standardization and Quality Assurance:

DIN7982 is a German industrial standard. Choosing screws that meet this standard means selecting products that have undergone strict quality control and standardization. This helps ensure the quality and performance of the screws, thereby enhancing the reliability and safety of the overall product.

Convenient Installation Method:

• The cross-recessed design allows the screws to be easily tightened using a regular screwdriver or power tool, improving installation efficiency.
• The countersunk design enables the screw head to sink completely into the material surface, maintaining a flat installation surface while avoiding possible damage or inconvenience caused by protruding screw heads.

Wide Applicability and Compatibility:

• DIN7982 standard screws are available in various sizes, such as ST2.2 to ST6.3, suitable for materials of different thicknesses and hardness, providing greater flexibility.
• Due to their self-tapping nature, these screws can be installed directly without pre-drilling or tapping, simplifying the workflow.

Combination of Aesthetics and Practicality:

• The head of the countersunk screw does not protrude from the installation surface, maintaining the overall aesthetics, especially suitable for applications that require attention to appearance.
• Simultaneously, its cross-recessed design ensures convenient and practical operation.

Multiple Material and Surface Treatment Options:

• DIN7982 standard screws can be made of various materials, such as stainless steel, carbon steel, etc., to meet different corrosion resistance and strength requirements.
• Surface treatments like galvanizing or nickel plating further enhance the screw's corrosion resistance and service life.

Application Scenarios:

• Machinery Manufacturing: Used to fix and connect various components in machinery manufacturing and maintenance.
• Architectural Engineering: Can be used to fix boards, decorative strips, and other materials in construction projects.
• Furniture Production: Used to connect wood or other materials during furniture manufacturing, ensuring structural stability.
• Electronic Equipment: Used to fix circuit boards or other internal components, ensuring stable equipment operation.
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• Thread Size	ST2.2 ST2.9 ST3.5 (ST3.9) ST4.2 ST4.8 ST5.5 ST6.3
  P Pitch a max dk max=nominal size min k ≈ y max Type C Type F Socket No. M1 ≈ M2 ≈	0.8 1.1 1.3 1.3 1.4 1.6 1.8 1.8 0.8 1.1 1.3 1.3 1.4 1.6 1.8 1.8 4.3 5.5 6.8 7.5 8.1 9.5 10.8 12.4 4 5.2 6.44 7.14 7.74 9.14 10.37 11.97 1.3 1.7 2.1 2.3 2.5 3 3.4 3.8 2 2.6 3.2 3.5 3.7 4.3 5 6 1.6 2.1 2.5 2.7 2.8 3.2 3.6 3.6 1 1 2 2 2 2 3 3 2.5 3 4.2 4.6 4.7 5.1 6.8 7.1 2.4 2.8 4 4.2 4.4 5 6.3 7