Double End Stud Manufacturer & Supplier
Double End Studs provide a practical fastening solution where components need to be secured using nuts on both sides of the assembly. The threaded ends can be manufactured with equal or application-specific thread lengths, while the center shank can provide controlled spacing and alignment between components.
Compared with fully threaded rods, Double End Studs can offer defined threaded engagement at both ends and a controlled central shank. This makes them suitable for applications where dimensional control, accurate positioning and reliable clamping are important.
Double End Stud Specifications
Applicable Standards
Double End Studs can be manufactured according to applicable industry standards, including:
- ASTM A193
- ASTM A320
- ASME B18.31.2
- ASME B1.1 Thread Standards
- Customer drawings and project specifications
Available Sizes
Double End Studs are available in standard and custom diameters and lengths. Overall dimensions and thread lengths can be manufactured according to the required application.
Thread Types
- UNC
- UNF
- 8UN
- Metric Threads
- Custom thread configurations
Available Materials
- Carbon Steel
- Alloy Steel
- Stainless Steel
- Duplex Stainless Steel
- Super Duplex Stainless Steel
- Inconel
- Monel
- Hastelloy
Features & Benefits
Applications
Oil & Gas Pipelines
Double End Studs are used in selected pipeline flanges, valves and mechanical connections where reliable high-strength bolting is required.
Pressure Vessels
Suitable for pressure vessel flanges, covers and other bolted connections requiring controlled and secure fastening.
Heat Exchangers
Used in selected heat exchanger covers, flanges and equipment assemblies.
Refineries
Suitable for refinery piping, valves, process equipment and pressure-containing assemblies.
Petrochemical Plants
Used in process equipment, piping systems, flanged connections and heavy-duty industrial assemblies.
Power Generation
Double End Studs can be supplied for power plant equipment, piping and mechanical assemblies.
Offshore Platforms
Corrosion-resistant materials and protective finishes can be selected for demanding offshore environments.
Heavy Industrial Equipment
Used in heavy machinery, industrial equipment, pressure systems and engineered mechanical assemblies.
Available Material Grades
Surface Finishes
Plain Finish
Plain finish is available for suitable alloy steel and stainless steel applications where additional surface coating is not required.
PTFE Coating
PTFE coatings can provide low-friction characteristics and additional corrosion protection for suitable applications.
Hot Dip Galvanized
Hot dip galvanizing can provide enhanced atmospheric corrosion protection for compatible carbon steel applications.
Zinc Plated
Zinc plating provides an additional protective surface for suitable industrial fastening applications.
Black Oxide
Black oxide finishes can be supplied for applicable steel fastener applications.
Xylan Coating
Xylan coatings can be supplied where enhanced corrosion resistance and controlled friction characteristics are required.
Cadmium
Cadmium coating may be supplied where specifically required by project specifications and permitted for the intended application.
Dimensions & Technical Specifications
| Specification | Details |
|---|---|
| Diameter | Standard & Custom |
| Overall Length | As per customer requirement |
| Thread Length (Both Ends) | Standard or Custom |
| Plain Shank Diameter | As specified |
| Thread Pitch | UNC, UNF, 8UN, Metric |
| Thread Class | As specified |
| Weight | Based on material and dimensions |
Why Choose Industrial Engineering Works?
Frequently Asked Questions
What are Double End Studs?
Double End Studs are externally threaded fasteners with threaded sections at both ends, generally separated by a central shank or unthreaded section. Nuts can be used on both threaded ends to secure the assembly.
How are Double End Studs different from Tap End Studs?
Double End Studs have externally threaded ends designed for nut engagement, while Tap End Studs have one end intended to engage directly into a tapped hole.
What ASTM standards apply to Double End Studs?
Depending on the material and application, Double End Studs can be manufactured to ASTM A193, ASTM A320 and applicable ASME requirements.
Which material grades are available?
Common material options include ASTM A193 B7, B16, B8, B8M and ASTM A320 L7, along with duplex, super duplex, nickel alloys and other custom materials.
Where are Double End Studs commonly used?
They are commonly used in oil & gas, petrochemical plants, refineries, pressure vessels, heat exchangers, power generation, offshore platforms and heavy industrial equipment.
Can Double End Studs be manufactured to custom dimensions?
Yes. Custom diameters, overall lengths, thread lengths, shank dimensions, thread types and material grades can be manufactured according to drawings or project requirements.
Which thread types are available?
UNC, UNF, 8UN and metric threads are available. Special thread configurations can also be manufactured according to customer requirements.
Do you supply Heavy Hex Nuts with Double End Studs?
Yes. Compatible Heavy Hex Nuts can be supplied based on the stud diameter, thread type, material grade and applicable specification.
What coatings are available?
Available options can include PTFE, Xylan, hot dip galvanized, zinc plated, black oxide and other finishes depending on material and application requirements.
Do you provide material test certificates (MTC)?
Yes. MTCs such as EN 10204 3.1 / 3.2 can be supplied along with applicable inspection and traceability documentation when specified.