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China Hexagon Nut For Pressure Vessel Flange Manufacturer, Supplier, Factory

When assembling pressure vessel flanges, reliability is non-negotiable. Our Hexagon Nut For Pressure Vessel Flange is engineered to deliver maximum performance under extreme conditions. For applications requiring a low-profile design with precise threading, our Hexagon Extra Flat Nuts With Fine Pitch Thread offer an excellent solution. In scenarios demanding increased bearing surface and thickness, the Inch Hexagon Thick Nuts With Washer Faced provide superior load distribution. For the most severe service environments involving elevated pressures, our range of High Pressure Hexagon Nuts are specifically designed to maintain joint integrity and prevent leakage, ensuring the safety and longevity of your pressure vessel systems.


The Hexagon Nut For Pressure Vessel Flange is manufactured to exacting international standards, including ASTM A194 Gr. 2H/2HM and ASME B18.2.2. This ensures consistent quality, dimensional accuracy, and material traceability. The nuts are typically supplied in a hot-dip galvanized finish for superior corrosion resistance, but other coatings like Xylan or Geomet are available upon request for specific environmental challenges. The design incorporates a robust hexagon shape for secure tool engagement and efficient installation.

  • Material Grades: Carbon Steel, Alloy Steel, Stainless Steel (AISI 304, 316, 316L)
  • Standards: ASTM A194, ASME B18.2.2, DIN 934, ISO 4032
  • Thread Types: UNC, UNF, Fine Pitch (UNF), Metric Coarse & Fine
  • Available Sizes: From M10 to M100, 1/2" to 4" nominal diameter
  • Proof Load: Meets or exceeds requirements for Grade 2H/2HM
Nominal Size (inch) Width Across Flats (mm) Height (mm) Proof Load (MPa, min) Hardness (HB, max)
1/2 22 11 860 302
3/4 27 14 860 302
1 36 18 860 302
1 1/2 50 26 860 302
2 60 31 860 302

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