Heavy Hex Nuts Manufacturer & Supplier
Heavy Hex Nuts are high-strength threaded fasteners designed to provide a larger bearing surface and improved load distribution compared with standard hex nuts. They are commonly used with stud bolts and high-strength bolts in demanding industrial assemblies.
Industrial Engineering Works manufactures and supplies Heavy Hex Nuts in ASTM, ASME and other applicable standards, with options for carbon steel, alloy steel, stainless steel, duplex and nickel alloys. Custom dimensions, threads, finishes and material requirements can also be supplied according to project specifications.
Heavy Hex Nut Specifications
Available Standards
- ASTM A194 Grade 2H
- ASTM A563
- ASME B18.2.2
- DIN / ISO, where applicable
Available Sizes
Heavy Hex Nuts are available in standard and custom sizes to suit different bolt and stud bolt assemblies. Sizes can be manufactured according to applicable dimensional standards or customer drawings.
Thread Types
- UNC
- UNF
- Metric
Available Materials
- Carbon Steel
- Alloy Steel
- Stainless Steel
- Duplex Stainless Steel
- Super Duplex Stainless Steel
- Nickel Alloys
Features & Benefits
Applications
Oil & Gas
Used in high-strength bolted connections for oil & gas production, processing and associated equipment.
Petrochemical Plants
Suitable for pressure-containing equipment, piping systems, flanges and process equipment.
Power Generation
Used in industrial equipment, piping assemblies, pressure systems and heavy-duty mechanical connections.
Refineries
Heavy Hex Nuts are used for demanding flange, valve, piping and equipment connections.
Offshore Platforms
Suitable for offshore equipment where high mechanical strength and corrosion-resistant materials may be required.
Chemical Plants
Used in process equipment and bolted connections exposed to demanding operating conditions.
Construction & Infrastructure
Available for structural and heavy engineering applications requiring high-strength fastening solutions.
Available Grades
Surface Finishes
Plain
Standard uncoated finish suitable for many controlled industrial environments.
Hot Dip Galvanized
Provides enhanced corrosion protection for suitable carbon steel applications.
Zinc Plated
Zinc plating provides an additional protective layer for applicable industrial environments.
PTFE Coated
PTFE coatings can be supplied where low friction and enhanced corrosion resistance are required.
Black Oxide
Black oxide finishes are available for suitable steel fastener applications.
Cadmium
Cadmium finishes may be available where specifically required and permitted for the intended application.
Dimensions & Technical Data
| Parameter | Details |
|---|---|
| Diameter | Standard & Custom |
| Width Across Flats | As per applicable standard |
| Thickness | As per applicable standard |
| Thread Pitch | UNC, UNF, Metric |
| Weight | Based on size and material |
| Torque Values | Available based on application and specification |
Why Choose Industrial Engineering Works?
Frequently Asked Questions
What is a Heavy Hex Nut?
A Heavy Hex Nut is a high-strength nut with a larger and thicker hexagonal profile than a standard hex nut. The increased bearing area makes it suitable for demanding bolted connections.
What is the difference between Heavy Hex and Standard Hex Nuts?
Heavy Hex Nuts generally have larger across-flat dimensions and greater thickness than standard hex nuts, providing a larger bearing surface and suitability for high-strength applications.
Which bolts are compatible with Heavy Hex Nuts?
Compatibility depends on diameter, thread type, material grade and applicable standards. Heavy Hex Nuts can be supplied to match ASTM, ASME and other specified bolts or stud bolts.
What ASTM grades are available?
Common options include ASTM A194 Grade 2H, ASTM A563 Grade DH and ASTM A563 Grade C, along with other grades depending on application requirements.
Are Heavy Hex Nuts suitable for high-temperature applications?
Certain material grades are suitable for elevated-temperature applications when selected according to the applicable material specification and operating conditions.
Can you supply custom sizes?
Yes. Custom dimensions, thread configurations, materials and special requirements can be manufactured according to customer drawings or project specifications.
Do you provide MTC certificates?
Yes. Material Test Certificates such as EN 10204 3.1 / 3.2 can be supplied when specified, along with applicable inspection and traceability documentation.
What industries use Heavy Hex Nuts?
Heavy Hex Nuts are used across oil & gas, petrochemical, refinery, power generation, chemical processing, offshore, construction and heavy engineering industries.