API 20E Heavy Hex Nuts for Critical Oil & Gas Applications
Industrial Engineering Works supplies API 20E Heavy Hex Nuts for critical Oil & Gas applications and high-pressure bolted joints where reliable mechanical performance, material traceability and quality documentation are essential.
These heavy hex nuts are used with compatible API 20E stud bolts and bolting assemblies in applications such as wellheads, Christmas trees, pressure-control equipment, subsea equipment and other critical industrial systems.
Products are supplied according to applicable API Spec 20E requirements, customer specifications and project requirements. We support USA supply requirements with worldwide delivery.
What are API 20E Heavy Hex Nuts?
API 20E Heavy Hex Nuts are heavy hexagonal nuts used in Industrial Engineering Works assemblies where the applicable requirements of API Spec 20E apply.
Heavy hex nuts provide a broad bearing surface and are designed to work with compatible stud bolts to create secure bolted joints. Their selection involves consideration of material grade, dimensions, thread configuration, mechanical properties and applicable service requirements.
API 20E requirements include controls related to qualification, production, material traceability, heat treatment, mechanical property verification and quality documentation.
The applicable Bolting Specification Level (BSL) determines the required level of qualification, manufacturing controls, inspection and documentation.
Features of API 20E Heavy Hex Nuts
Manufactured to API Spec 20E
Supplied according to applicable API Spec 20E requirements and customer specifications.
High Strength Alloy & Carbon Steel
Available in applicable alloy steel and carbon steel material grades for demanding bolting applications.
Precision Machined Threads
Precision-machined threads for proper engagement with compatible stud bolts and bolting assemblies.
Complete Material Traceability
Material and product identification to support traceability requirements for critical applications.
Superior Load Distribution
The heavy hex configuration provides a broad bearing surface for effective load distribution within compatible bolted assemblies.
Excellent Mechanical Properties
Material and heat treatment requirements are controlled according to the applicable specification and grade.
Heat Treated Materials
Applicable material grades can be heat treated according to the required specification and customer requirements.
Corrosion Resistant Coatings Available
Plain and applicable corrosion-resistant finishes can be supplied according to project requirements.
Third-Party Inspection
Third-party inspection can be arranged according to customer and project requirements.
Mill Test Certificates (MTC)
Applicable material and quality documentation can be provided with the supplied products.
Bolting Specification Levels (BSL)
BSL-1
BSL-1 represents the applicable baseline qualification and manufacturing requirements for API 20E bolting materials.
BSL-2
BSL-2 includes additional qualification, inspection, documentation and manufacturing controls compared with BSL-1.
BSL-3
BSL-3 represents a higher level of qualification and quality requirements for applications where enhanced manufacturing controls, inspection and documentation are specified.
Available Material Grades
ASTM A194 Grade 2H
ASTM A194 Grade 2H heavy hex nuts for demanding high-pressure and high-temperature bolting applications.
ASTM A194 Grade 2HM
ASTM A194 Grade 2HM nuts for applications requiring the specified material and mechanical requirements of the grade.
ASTM A194 Grade 7
ASTM A194 Grade 7 alloy steel nuts for demanding industrial applications.
ASTM A194 Grade 7M
ASTM A194 Grade 7M nuts for applications requiring the specified material, hardness and mechanical requirements.
ASTM A563 Heavy Hex Nuts
ASTM A563 heavy hex nuts for applicable industrial fastening requirements.
ASTM A540 Grades
ASTM A540 grades for specialty alloy steel applications where specific material and performance requirements apply.
Duplex & Super Duplex Heavy Hex Nuts
Duplex and super duplex heavy hex nuts for demanding applications requiring suitable mechanical strength and enhanced corrosion resistance.
Nickel Alloy Heavy Hex Nuts
Nickel alloy heavy hex nuts for demanding environments where specific temperature and corrosion resistance characteristics are required.
Applications
Wellheads
Heavy hex nuts for specified Industrial Engineering Works assemblies used in wellhead equipment.
Christmas Trees
For compatible bolting connections within Christmas tree and pressure-control equipment.
Blowout Preventers (BOP)
For specified BOP equipment and critical bolted assemblies.
Pressure Control Equipment
Heavy hex nuts for pressure-control systems requiring specified bolting materials and mechanical performance.
Subsea Equipment
For applicable subsea equipment and critical offshore fastening applications.
Pipeline Flanges
Heavy hex nuts for specified pipeline flange connections and associated bolting assemblies.
Valves
For industrial valve assemblies requiring compatible heavy hex nuts and stud bolts.
Pressure Vessels
For specified pressure vessel and pressure-containing equipment applications.
Drilling Equipment
Heavy hex nuts for applicable drilling equipment and critical mechanical connections.
Offshore Platforms
For demanding offshore equipment and bolted assemblies.
Petrochemical Plants
For process equipment, piping systems, valves and other petrochemical applications.
LNG Facilities
For applicable LNG equipment, piping and critical bolted connections.
Why Choose Industrial Engineering Works?
Testing & Quality Assurance
Positive Material Identification (PMI)
Material identification testing to verify the specified material composition.
Hardness Testing
Hardness verification according to the applicable material and product requirements.
Tensile Verification
Mechanical property verification according to the applicable specification and grade.
Charpy Impact Testing
Charpy impact testing where required by the applicable specification or customer requirement.
Ultrasonic Testing (UT)
Ultrasonic testing where specified for the applicable product and inspection requirements.
Magnetic Particle Inspection (MPI)
Magnetic particle inspection according to applicable inspection requirements.
Dimensional Inspection
Verification of critical nut dimensions and product geometry.
Thread Gauge Inspection
Inspection of thread dimensions and compatibility using applicable thread gauges.
Heat Treatment Verification
Verification of applicable heat treatment requirements for specified material grades.
Material Traceability
Maintaining material and product identification throughout the applicable supply process.
Third-Party Inspection
Third-party inspection can be arranged according to customer and project requirements.
EN 10204 3.1 / 3.2 Certification
EN 10204 3.1 / 3.2 certification can be provided where specified by the customer or project requirements.
Available Sizes & Specifications
| Specification | Details |
|---|---|
| Thread Size | ½" to 4" (Custom Sizes Available) |
| Thread Type | UNC, UNF, 8UN |
| Material | ASTM A194, ASTM A563, ASTM A540 & Special Alloys |
| Finish | Plain, PTFE, Xylan, Zinc, Hot Dip Galvanized |
| Standard | API Spec 20E |
| Nut Type | Heavy Hex Nut |
Why Customers Across the USA Choose Our API 20E Heavy Hex Nuts
Frequently Asked Questions
What are API 20E Heavy Hex Nuts?
API 20E Heavy Hex Nuts are heavy hexagonal nuts used in Industrial Engineering Works assemblies where applicable API 20E bolting requirements apply. They are selected according to material, dimensions, mechanical requirements and the applicable BSL level.
What is API Spec 20E?
API Spec 20E establishes requirements for bolting materials used in critical applications, including requirements related to qualification, production, manufacturing controls, testing and documentation.
What are BSL-1, BSL-2 and BSL-3?
BSL-1, BSL-2 and BSL-3 are Bolting Specification Levels under API 20E. They represent different levels of qualification, inspection, manufacturing controls and documentation requirements.
Which materials are available for API 20E Heavy Hex Nuts?
Available material options include ASTM A194 grades, ASTM A563, ASTM A540 grades, duplex and super duplex materials, and nickel alloys, according to the applicable specification and customer requirements.
Where are API 20E Heavy Hex Nuts used?
They are used in critical applications including wellheads, Christmas trees, BOPs, pressure-control equipment, subsea equipment, pipeline flanges, valves, pressure vessels, drilling equipment, offshore platforms, petrochemical plants and LNG facilities.
Can you manufacture custom-sized API 20E Heavy Hex Nuts?
Yes. Custom-sized API 20E heavy hex nuts can be supplied according to required thread size, dimensions, material, finish and applicable specifications.
Do you provide inspection reports and material certificates?
Yes. Applicable inspection reports, material certificates and quality documentation can be provided according to the product, project and customer requirements.
Do you supply API 20E Heavy Hex Nuts throughout the USA?
Yes. API 20E Heavy Hex Nuts can be supplied to customers throughout the USA, with worldwide shipping capabilities for international requirements.