China Square Socket Pan Head Screws Manufacturer, Supplier, Factory

Perfect Your Projects with Square Socket Pan Head Screws

When it comes to reliable fastening solutions, Pan Head Screws With Square Socket offer superior performance. These screws are engineered for high-torque applications where a flat, low-profile head is required. For projects demanding a flush surface finish, our Square Socket Countersunk Flat Head Screws are the ideal choice. The unique design of a pan head screw with square groove provides exceptional resistance to cam-out, ensuring a secure and tight fit every time. Manufactured from high-grade materials, these screws are built to withstand significant stress and vibration.


The Square Socket Pan Head Screws are precision-engineered components designed for durability and ease of use. The pan head design offers a slightly rounded top with a flat bearing surface, which helps distribute the load effectively. The square socket drive allows for higher torque application compared to traditional Phillips or slotted drives, minimizing the risk of driver slippage and damage to the screw head. This makes them particularly suitable for automated assembly lines and applications where repetitive, high-torque fastening is required. The robust construction ensures a long service life, even in demanding environments.

Detailed Specifications of Our Square Socket Pan Head Screws

  • Drive Type: Square Socket (Robertson)
  • Head Style: Pan Head
  • Material: Grade 5 Steel, Stainless Steel 304/316, and Alloy Steel
  • Finish: Zinc Plated, Black Oxide, and Plain
  • Standards: Compliant with ASME B18.3, DIN 7985, and ISO 14583
  • Thread Type: Fully Threaded, Coarse and Fine Thread Options Available

Technical Data Table

Size (Diameter x Length) Square Socket Size Head Diameter (mm) Proof Load (MPa, min) Recommended Torque (N·m)
M4 x 10mm #2 8.0 580 3.5
M5 x 12mm #3 9.5 600 7.0
M6 x 16mm #4 11.5 650 12.0
M8 x 20mm #5 15.0 700 28.0
M10 x 25mm #6 18.0 830 55.0

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