Square Head Bolt

Square head bolts are fasteners that feature a four-sided head, which provides a larger gripping surface for secure wrenching and tightening. These bolts are commonly used in construction, machinery, and woodworking applications, as they ensure a strong hold and offer improved resistance to loosening. Their design allows for better torque application and helps prevent rounding, making them ideal for heavy-duty projects and vintage-style assemblies.


Material Grade

Mild Steel 4.6, 5.6
Alloy Steel 8.8, 10.9, 12.9
Stainless Steel 202, 304, 316

Size Range

Diameter M6 to M24
Length 20mm to 200mm

Passivation

  • Anti-RustAnti-Rust
  • Black OxideBlack Oxide
  • Black ZincBlack Zinc
  • CopperCopper
  • Hot Dip GalvanizingHot Dip Galvanizing
  • Nickel PlatingNickel Plating
  • Olive Green ZincOlive Green Zinc
  • PTFEPTFE
  • White ZincWhite Zinc
  • Yellow ZincYellow Zinc
  • Zinc Flake CoatingZinc Flake Coating
  • Zinc NickelZinc Nickel
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