Carbon Steel Cross Countersunk Self Tapping Screws

Phillips Countersunk Self-Tapping Screw, also known as cross recessed flat head self-tapping screw, is widely used for fastening and connecting thin metal sheets, electronic enclosures, plastic components and industrial equipment.

ZSD Screw specialize in high-performance carbon steel Phillips countersunk self-tapping screws designed for precise assembly and reliable fastening in industrial and structural applications. By integrating in-house production with rigorous quality control, ZSD Screw delivers stable, international-standard fasteners directly to global customers, ensuring consistent thread forming performance, strong holding force, and long service life.

Carbon steel cross countersunk self tapping screw dimensions are manufactured according to DIN, ISO and ASTM standards. Custom drawings and samples are accepted.

Type: Self-Tapping Screw (Thread Forming / Thread Cutting)
Diameter Range: 2.2 mm – 10 mm.
Length Range: 4mm – 150mm.
Thread Type: AB / B / C / F / Hi-Lo / Special Forming Threads.
Thread Form: Full Thread / Special Forming Thread.
Standard: DIN 7982 / ISO 7050 / ASTM C1002 / ASTM C954.
Tolerance:  According to standard or customer drawing.

We supply self-tapping screws in a wide range of materials including: Carbon Steel (1022, 10B21, Q235) Alloy Steel (for high-strength applications) Stainless Steel (304, 316, 410) Brass, Aluminum and special alloys (on request)

Strength Grades: Carbon steel cross countersunk self tapping screws are available in different strength grades to meet various load requirements: 4.8, 8.8, 10.9, 12.9, 14.9.  Heat treatment is completed in-house to ensure stable mechanical properties, controlled surface hardness, and reliable thread forming performance.

Surface Treatment: To improve corrosion resistance and service life, we offer the following surface finishes: Zinc plated (blue / white / yellow). Black oxide. Phosphate coating. Zinc flake coating. Mechanical galvanizing. Dacromet / Ruspert. Special surface treatments are available according to customer requirements.

Applications:In mechanical equipment manufacturing, ZSD Screw carbon steel Phillips countersunk self-tapping screws are widely used for assembling machine housings, sheet metal covers, transmission enclosures, control panels, motor casings, pumps, compressors, and automated production equipment. These applications require stable thread forming performance, controlled installation torque, and vibration resistance to ensure long-term joint stability. Precision thread forming and controlled heat treatment processes provide uniform mechanical properties, helping maintain joint integrity during extended service cycles.

In electronic equipment and industrial electronics, carbon steel Phillips countersunk self-tapping screws are applied in equipment housings, control cabinets, industrial enclosures, power distribution frames, and supporting brackets. Reliable fastening performance is critical for maintaining alignment accuracy, grounding stability, and vibration resistance in precision systems. ZSD Screw supplies screws suitable for both structural fastening and auxiliary mounting applications, supporting stable assembly in manufacturing lines, testing equipment, and control systems.

In the new energy sector, carbon steel Phillips countersunk self-tapping screws from ZSD Screw are used in solar mounting systems, photovoltaic support structures, inverter frames, battery rack systems, and energy storage equipment assemblies. These applications require stable clamping force and long-term durability under outdoor exposure, temperature variation, and continuous mechanical stress. Controlled material selection and surface treatment processes help improve corrosion resistance and extend service life in renewable energy installations.

In conventional and renewable power generation facilities, these screws are applied in generator foundations, turbine housings, auxiliary equipment frames, cooling systems, control cabinets, and pipeline supports. Secure fastening performance is essential for maintaining structural stability under thermal expansion, vibration, and long-term operating conditions. ZSD Screw provides fastening solutions that support safe assembly and reliable operation in thermal power plants, wind power systems, hydropower equipment, and energy infrastructure projects.

In the automotive and transportation industries, ZSD Screw carbon steel Phillips countersunk self-tapping screws are used in body assemblies, interior trim fastening, electronic module housings, cable management systems, and auxiliary component mounting. These critical joints require consistent torque performance, vibration resistance, and dimensional accuracy to ensure vehicle safety and durability under dynamic driving conditions. Stable production control ensures reliable fastening quality across high-volume manufacturing and aftermarket applications.

In heavy industry and engineering equipment manufacturing, these screws are widely applied in control cabinets, equipment covers, sheet metal structures, electrical systems, and auxiliary installations. Applications such as construction machinery, mining equipment, lifting systems, steel structure installations, conveyors, and processing equipment require dependable thread forming and stable holding strength under vibration and impact loads. ZSD Screw supplies fastening components designed to support long-term structural integrity and safe operation in demanding industrial environments.