Stud Bolts
Industrial Engineering Works manufactures and supplies high-strength stud bolts for demanding industrial, oil & gas, petrochemical, power generation and pressure equipment applications. Our stud bolts are available in alloy steel, stainless steel, carbon steel, duplex, super duplex and nickel alloy materials, with ASTM, ASME, ANSI, DIN and ISO standards available according to project requirements.
Â
Stud bolts can be supplied in standard and custom dimensions with different thread configurations, coatings, surface finishes and inspection requirements. Material traceability, dimensional accuracy and applicable testing support reliable performance in critical bolted connections.
Types of Stud Bolts
Fully Threaded Stud Bolts
Fully threaded stud bolts feature continuous threading along the required length and are commonly used for flange connections, piping systems, pressure vessels and other industrial bolting applications.
Tap End Stud Bolts
Tap end stud bolts are designed with different thread configurations at each end, making them suitable for applications where one end is installed into a tapped component while the other end receives a nut.
Double End Stud Bolts
Double end stud bolts feature threaded ends with an unthreaded center section and are commonly used for flanges, valves, equipment connections and other industrial assemblies.
Reduced Shank Stud Bolts
Reduced shank stud bolts are manufactured with a reduced diameter in the shank section to meet specific application and engineering requirements while maintaining the required threaded ends.
Continuous Thread Stud Bolts
Continuous thread stud bolts provide threading along the complete specified length and are available in different diameters, lengths and thread configurations.
Stud Bolts by Material
Stud Bolts by ASTM Standards
ASTM A193 B7 Stud Bolts
ASTM A193 Grade B7 stud bolts are high-strength alloy steel fasteners commonly used for pressure vessels, valves, flanges, piping and oil & gas applications.
ASTM A193 B16 Stud Bolts
ASTM A193 Grade B16 stud bolts are alloy steel fasteners designed for demanding high-temperature and high-pressure applications where specified mechanical properties are required.
ASTM A320 L7 Stud Bolts
ASTM A320 Grade L7 stud bolts are heat-treated alloy steel fasteners suitable for applications requiring reliable mechanical performance at lower temperatures.
ASTM A453 Stud Bolts
ASTM A453 stud bolts are specialized fasteners for high-temperature applications, including pressure vessels, valve flanges and other severe-service equipment.
ASTM A540 Stud Bolts
ASTM A540 stud bolts are high-strength alloy steel bolting products used for demanding industrial, pressure vessel, power generation and specialized applications.
ASTM F593 Stainless Steel Stud Bolts
ASTM F593 stainless steel stud bolts are suitable for applications requiring corrosion-resistant stainless steel fastening materials and specified mechanical properties.
Stud Bolt Specifications
| Specification | Details |
|---|---|
| Diameter | 1/4" to 4" |
| Length | Custom |
| Thread Type | UNC, UNF, Metric |
| Standards | ASTM, ASME, ANSI, DIN, ISO |
| Material | Alloy Steel, Stainless Steel, Carbon Steel, Duplex |
| Finish | Plain, PTFE, Xylan, Hot Dip Galvanized, Zinc Plated |
Available Grades
ASTM A193 B7
ASTM A193 B7 stud bolts are widely used for high-pressure and high-temperature industrial applications, including flanges, valves and pressure equipment.
ASTM A193 B7M
ASTM A193 B7M provides a modified alloy steel bolting option for applications where the specified material and hardness requirements are required.
ASTM A193 B16
ASTM A193 B16 stud bolts are designed for demanding high-temperature applications and can be manufactured according to required project specifications.
ASTM A320 L7
ASTM A320 L7 stud bolts are suitable for applications requiring alloy steel bolting with specified low-temperature mechanical performance.
ASTM A320 L7M
ASTM A320 L7M stud bolts are available for applications requiring the applicable material, hardness and mechanical requirements of the specified grade.
ASTM A193 B8
ASTM A193 B8 stainless steel stud bolts are suitable for applications requiring corrosion-resistant bolting materials.
ASTM A193 B8M
ASTM A193 B8M stud bolts are manufactured from molybdenum-bearing stainless steel for applications requiring enhanced corrosion resistance.
Applications of Stud Bolts
Stud Bolt Dimensions & Thread Standards
UNC Threads
Unified National Coarse threads are commonly used for industrial and flange bolting applications where coarse thread configurations are specified.
UNF Threads
Unified National Fine threads provide a finer thread configuration and can be supplied where required by the application or engineering specification.
Metric Threads
Metric stud bolts are available according to specified diameter, pitch and dimensional requirements for international industrial applications.
ASME B1.1
ASME B1.1 thread requirements can be followed for applicable inch-based unified thread configurations.
ASME B16.5 Flange Compatibility
Stud bolts can be supplied for compatible flange assemblies according to the applicable flange dimensions, pressure class and project requirements.
Standard Stud Bolt Lengths
Standard and custom stud bolt lengths can be manufactured according to flange thickness, nut engagement, equipment design and customer specifications.
Why Choose Industrial Engineering Works?
Stud Bolt Coatings & Surface Finishes
PTFE Coated
PTFE coatings provide a low-friction surface and can offer additional corrosion protection for suitable industrial applications.
Xylan Coated
Xylan coatings can provide corrosion resistance, reduced friction and improved performance in demanding industrial environments.
Hot Dip Galvanized
Hot dip galvanizing provides a zinc coating for enhanced corrosion protection in suitable outdoor and industrial applications.
Zinc Plated
Zinc plating provides a protective surface finish for applications requiring additional corrosion resistance.
Black Oxide
Black oxide provides a dark surface finish and can be supplied for suitable industrial fastener applications.
Frequently Asked Questions
What is a stud bolt?
A stud bolt is a threaded fastening component used with nuts to secure flanges, valves, pressure vessels, piping and other equipment connections. Stud bolts can be manufactured with different thread configurations, materials and lengths according to application requirements.
What is the difference between a stud bolt and a hex bolt?
A stud bolt is generally installed with nuts and is commonly used in flange and equipment connections, while a hex bolt has an integrated hexagonal head and is tightened from the head side.
Which ASTM standards are available for stud bolts?
Industrial Engineering Works can supply stud bolts according to applicable standards including ASTM A193, ASTM A320, ASTM A453, ASTM A540 and ASTM F593, subject to material and project requirements.
Which industries use stud bolts?
Stud bolts are widely used in oil & gas, petrochemical plants, refineries, power generation, pressure vessels, heat exchangers, offshore platforms and pipeline systems.
Can you manufacture custom stud bolts?
Yes. Custom stud bolts can be manufactured according to required diameter, length, thread configuration, material, finish, coating and customer drawings or specifications.
Do you supply stud bolts throughout the USA?
Yes. Industrial Engineering Works provides stud bolts for customers and industrial projects across the USA, along with worldwide export capabilities.