China High pressure hex nuts Manufacturer, Supplier, Factory

High Pressure Hex Nuts: Engineered for Extreme Conditions

In high-pressure systems, every component's integrity is paramount. Our High Pressure Hexagon Nuts are precision-engineered to deliver unmatched reliability and performance under the most demanding operational stresses. Specifically designed for critical applications, these nuts ensure a secure, leak-proof seal in piping, valve assemblies, and pressure vessels. For systems operating within specific pressure ratings, we offer specialized Hexagon nuts for PN16~32MPa. These variants are rigorously tested to perform flawlessly across this pressure spectrum, preventing joint failure and maintaining system safety. Our commitment to quality ensures that our hex nuts meet and exceed international standards, providing a robust sealing solution you can trust.


Technical Specifications of High Pressure Hex Nuts

The superior performance of our High pressure hex nuts is a direct result of their meticulous design and material selection. Manufactured from high-grade alloys, these nuts exhibit exceptional tensile strength and resistance to corrosion, making them suitable for a wide range of industrial environments, including chemical processing, oil and gas, and power generation. The following tables detail the critical parameters for our standard High pressure hex nuts range.

Material & Mechanical Properties

  • Material Grade: ASTM A194 Gr. 2H / 2HM, ASTM A563 Gr. DH
  • Specification: ASME B18.2.2
  • Tensile Strength: 150 ksi (min)
  • Proof Load: 120 ksi (min)
  • Hardness: HB 248 - 327
  • Surface Treatment: Plain, Hot-Dip Galvanized, or Xylan Coating

Standard Dimensions (Heavy Hex Series)

Nominal Size (inches) Width Across Flats (inches) Width Across Corners (inches) Height (inches) Thread Pitch
1/2 7/8 1.010 0.484 13 UNC
5/8 1-1/16 1.227 0.603 11 UNC
3/4 1-1/4 1.443 0.691 10 UNC
1 1-1/2 1.732 0.866 8 UNC
1-1/4 1-7/8 2.166 1.024 8 UN

Pressure-Temperature Ratings

Material Temperature Range (°F) Max Allowable Pressure (psi)
Carbon Steel -20 to 800 2500
Alloy Steel -150 to 1000 4500
Stainless Steel -425 to 1200 3000

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