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Super Duplex Steel Hex Nuts Supplier

A super duplex hex nut is a type of fastener used in various industries and applications. It belongs to the family of nuts and is designed to be used with bolts or threaded rods. The term “super duplex” refers to the material composition of the nut.

Super duplex stainless steel is a high-performance alloy that exhibits exceptional strength, corrosion resistance, and durability. It is composed of a balanced mixture of austenite and ferrite phases, which provides superior mechanical and chemical properties compared to standard duplex stainless steels.

As your dedicated Super Duplex Steel Hex Nuts Supplier, we provide high-quality hex nuts crafted from robust Super Duplex steel, ensuring exceptional resistance to corrosion and wear for your industrial projects. With our expertise as a leading Super Duplex Steel Hex Nuts Manufacturer, you can trust us to deliver precision-engineered hex nuts designed for durability and reliable fastening in challenging environments. Count on us for top-notch hex nuts tailored to your specific requirements.

The hex nut design is characterized by its six-sided shape, which allows for easy tightening and loosening using a wrench or a socket. The threaded internal bore of the nut matches the external threads of a bolt or rod, enabling them to be securely fastened together.

Super duplex hex nuts are commonly used in environments where corrosion resistance and high strength are crucial, such as offshore oil and gas platforms, marine applications, chemical processing plants, and desalination plants. They are also utilized in various industries, including construction, power generation, and wastewater treatment.

When selecting a super duplex hex nut, it is essential to consider factors such as the nut’s size (diameter and thread pitch) and the corresponding bolt or rod specifications. These nuts are available in various standard sizes and can be customized as per requirements at the most reasonable prices.

When selecting a duplex steel hex nut, it’s important to consider the specific grade of duplex stainless steel required for the application, as different grades offer varying levels of corrosion resistance and mechanical properties. Common grades of duplex stainless steel include 2205 (S32205), 2507 (S32750), etc.

These nuts are commonly used in environments where high mechanical strength and excellent corrosion resistance are required, such as marine applications, offshore structures, chemical processing plants, and oil and gas industries.
Duplex Steel Hex Nuts are available in various sizes and thread configurations to accommodate different bolt or threaded rod diameters. It’s important to select the appropriate nut size and thread pitch that matches the corresponding bolt or threaded rod for a secure and proper fit.
When using Duplex Steel Hex Nuts, it’s crucial to follow industry standards and proper installation techniques to ensure optimal performance and reliability.

What is Super Duplex Hex Nut?

Super Duplex Hex Nut is a fastener designed to secure and tighten threaded bolts or studs with a hexagonal shape. It is made from Super Duplex stainless steel, known for its excellent corrosion resistance and high strength. Super Duplex Hex Nuts provide reliable and durable fastening solutions in demanding and corrosive conditions.

What is the benefits of using Super Duplex Hex Nut?

Using Super Duplex Hex Nuts offers several benefits in various applications. Their main advantage is the exceptional corrosion resistance provided by Super Duplex stainless steel. This resistance allows the nuts to withstand harsh & corrosive environments. Super Duplex Hex Nuts offer high strength and durability, ensuring secure and reliable fastening.

How can I maintain Super Duplex Hex Nuts for optimal performance?

Regular inspection and cleaning are recommended to maintain the optimal performance of Super Duplex Hex Nuts. Clean the nuts using mild soapy water and a soft brush, avoiding abrasive cleaners or tools that could scratch the surface. Ensure proper tightening of the nuts using appropriate torque values to prevent over or under-tightening, which can impact their performance.

Specification For Super Duplex Steel Hex Nuts

Standard ASTM A479 / ASME SA479
Size M02 to M33
Diameter 1/2″ up to 4″
Length: 3 mm to 200 mm
Types Heavy Hex Nuts, Hex Flange Nuts, Hex Jam Nut, Hex Coupling Nut, Heavy Duty Hex Nuts
Dimensions ASME B18.2.2 Heavy Hex Nuts, ASME B18.2.4.6M Metric Heavy Hex Nuts
DIN Standard DIN 934, DIN 985, DIN 936, DIN 929, DIN 1587, DIN 439
Threads METRIC, BSW, UNC, UNF, BSF or as required
Nuts Forming Hot Forged Nuts & Cold Forged Nuts
UTS – Unified Thread Standard UNC, UNF, NPT, UNS, UNEF, NPTF
Certification Dual Certified As per ASTM & ASME Codes
Super Duplex Steel Hex Nuts

Equivalent Grades Of Super Duplex Steel Hex Nuts

Super Duplex S32750 1.4410 S32750
Super Duplex S32760 1.4501 S32760

Super Duplex Steel Hex nut Dimensions

Hex Nut Dimensions (ANSI/ASME B18.2.2)

Nominal or Basic Major Diameter of Thread

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Width Across Flats (F)

Width Across Corners (G) Thickness of Hex Nuts (H) 
Basic Max Min  Max  Min Basic  Max Min 
1/4 0.2500 7/16 .438 .428 .505 .488 7/32 0.226 0.212
5/16 0.3125 1/2 .500 .489 .577 .557 17/64 0.273 0.258
3/8 0.3750 9/16 .562 .551 .650 .628 21/64 0.337 0.320
7/16 0.4375 11/16 .688 .675 .794 .768 3/8 0.385 0.365
1/2 0.5000 3/4 .750 .736 .866 .840 7/16 0.448 0.427
9/16 0.5625 7/8 .875 .861 1.010 .982 31/64 0.496 0.473
5/8 0.6250 15/16 .938 .922 1.083 1.051 35/64 0.559 0.535
3/4 0.7500 1-1/8 1.125 1.088 1.299 1.240 41/64 0.665 0.617
7/8 0.8750 1-5/16 1.312 1.269 1.516 1.447 3/4 0.776 0.724
1 1.0000 1-1/2 1.500 1.450 1.732 1.653 55/64 0.887 0.831
1-1/8 1.1250 1-11/16 1.688 1.631 1.949 1.859 31/32 0.999 0.939
1-1/4 1.2500 1-7/8 1.875 1.812 2.165 2.066 1-1/16 1.094 1.030
1-3/8 1.3750 2-1/16 2.062 1.994 2.382 2.273 1-11/64 1.206 1.138
1-1/2 1.5000 2-1/4 2.250 2.175 2.598 2.480 1-9/32 1.317 1.245
1-5/8 1.6250 2-7/16 2.438 2.356 2.815 2.686 1-25/64 1.429 1.353
1-3/4 1.7500 2-5/8 2.625 2.538 3.031 2.893 1-1/2 1.540 1.460
2 2.000  3 3.000 2.900 3.464 3.306 1-23/32 1.763 1.675
2-1/4 2.2500 3-3/8 3.375 3.263 3.897 3.719 1-15/16 1.986 1.890
2-1/2 2.5000 3-3/4 3.750 3.625 4.330 4.133 2-5/32 2.209 2.105
2-3/4 2.7500 4-1/8 4.125 3.988 4.763 4.456 2-3/8 2.431 2.319
3 3.000 4-1/2 4.500 4.350 5.196 4.959 2-19/32 2.654 2.534

Super Duplex Steel Hex Nuts Weight Chart

Size Weight
M1 0.030
M1.2 0.054
M1.4 0.063
M1.6 0.076
M2 0.142
M2.5 0.280
M3 0.384
M3.5 0.514
M4 0.81
M5 1.23
M6 2.50
M7 3.12
M8 5.20
M10 11.6
M12 17.3
M14 25.0
M16 33.3
M18 49.4
M20 64.4
M22 79
M24 110
M27 165
M30 223
M33 288
M36 393
M39 502
M42 652
M45 800
M48 977
M52 1220
M56 1420
M60 1690
M64 1980
M68 2300
M72 2670
M76 3040
M80 3440
M85 3930
M90 4930
M100 6820

Various Types of Super Duplex Steel Hex Nuts

Hex Nylock Nut

Super Duplex Hex Nylock Nut

Heavy Hex Nuts

Super Duplex Heavy Hex Nuts

Hex Dome Nuts

Super Duplex Hex Dome Nuts

Hex Flange Nuts

Super Duplex Hex Flange Nuts

Hex Coupling Nuts

Super Duplex Hex Coupling Nuts

Hex Lock Nuts

Super Duplex Hex Lock Nuts


If you require any further information, Please do not hesitate to contact us.

Ready Stock Of Super Duplex Steel Hex Nuts

  • SAF 2507 Hexagonal Nuts
  • Duplex Steel F53 Hex Nuts
  • SDSS S32750 Hex Nuts
  • ASME SA479 Super Duplex Steel Hex Nuts
  • Super Duplex Steel Large Hex Nuts
  • Super Duplex Steel Industrial Hex Nuts
  • SDSS S32760 Hexagon Dome Cap Nuts
  • Super Duplex Steel 1.4410 Hexagon Nut
  • S32760 Super Duplex Steel Hex Machine Nuts
  • Super Duplex Steel 2507 Hexagon Flange Nut
  • Super Duplex Stainless Steel 2507 Hexagon Lock Nut
  • Super Duplex Steel S32760 Hex Nuts
  • Super Duplex S32750 Hex Nut 
  • Super Duplex Steel Hex Cup Nuts
  • Super Duplex S32760 Hexagon Thin Nuts
  • Super Duplex Steel F55 Hex Nuts
  • ASTM A479 Super Duplex UNS S32205 Hex Nuts
  • Super Duplex Stainless Steel Castle Hex Nuts
  • Super Duplex Steel S32750 Hex Nuts
  • Super Duplex Steel Hex Nut
  • Super Duplex Steel 2507 Hex Nut 
  • Super Duplex 1.4501 Heavy Hex Nuts
  • Super Duplex Stainless Steel S32760 Hex Nuts
  • Super Duplex Stainless Steel Heavy Duty Hex Nuts
  • Super Duplex Steel S32760 Hex Nut 
Oil and Gas Industry
Power Generation Industry
Chemical Industry
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Howrah, Ernakulam , Kanpur, Chennai, Haryana, Bhopal, Hyderabad, Thane, Gurgaon, Ranchi, Ludhiana, Kolkata, Indore, Navi Mumbai, Visakhapatnam, New Delhi, Secunderabad, Nashik, Chandigarh, Jaipur, Rajkot, Nagpur, Ahmedabad, Jamshedpur, Pimpri-Chinchwad, Thiruvananthapuram, Bengaluru, Faridabad, Noida, Surat, mumbai, Pune.