Stud bolts are headless threaded fasteners used with nuts or tapped components. Depending on the assembly, they can be supplied as fully threaded studs, double-end studs, tap-end studs or complete flange stud sets with matching nuts. We manufacture standard and custom stud bolts in selected specialty alloys. Material grade, diameter, length, thread configuration, material condition, nut requirements, inspection and documentation are confirmed according to the applicable standard, purchase specification or customer drawing.
High-End Industrial Fasteners
OEM / ODM Manufacturing
Specialty Alloy Stud Bolts Manufacturer
Custom and standard stud bolts manufactured in nickel alloys, titanium, duplex stainless steels and other specialty materials for flanges, valves, pressure equipment and demanding industrial connections.
Product Options
Fully Threaded / Double-End / Tap-End / Flange Stud Sets
Thread Systems
Metric / UNC / UNF / 8UN, as specified
Standards
ISO / DIN / ASME, as applicable, or customer drawings.
Product Details
Specialty Alloy Stud Bolts for Flanges and Industrial Equipment
Technical details and quick reference information for this product.
- Product Type
- Fully Threaded Studs / Double-End Studs / Tap-End Studs / Flange Stud Sets
- Size Range
- Standard / Custom
- Length
- Standard / Cut to Length / Custom
- Thread System
- Metric / UNC / UNF / 8UN, as specified
- Thread Type
- Coarse / Fine / 8-Thread Series, as applicable
- Dimensional Standards
- ASME B18.31.2 or customer drawings; ISO / DIN dimensions where applicable.
- Manufacturing Basis
- Applicable Dimensional Standard / Customer Drawing / Project Specification
- Documentation
- MTC / EN 10204 3.1 / Heat No. Traceability, as specified
Material Selection
Available Materials
Our products can be manufactured in selected specialty alloys for corrosion resistance, elevated-temperature service, high strength and other demanding operating conditions. Select a material below to view detailed grades, properties and applicable material standards.
-
Representative Grades Alloy 600 / 601 / 625 / 718 / X-750
For corrosive, elevated-temperature and high-strength industrial service.
-
Representative Grades Alloy 800 / 800H / 800HT / 825 / 925
For heat-resistant, chemical-processing and corrosion-resistant industrial applications.
-
Representative Grades C-276 / C-22 / B-2
For severe chemical-processing and highly corrosive service environments.
-
Representative Grades Alloy 400 / K-500
For marine, seawater and chemical-processing applications.
-
Representative Grades 2205 / UNS S31803 / UNS S32205
For process equipment, chloride-containing environments and corrosion-resistant industrial service.
-
Representative Grades 2507 / UNS S32750 / UNS S32760
For offshore, marine, seawater and demanding chloride-containing environments.
-
Representative Grades Grade 2 / Grade 5 / TA2 / TC4 / TB3, as specified
For low-weight, corrosion-resistant and specialized industrial applications.
-
Representative Grades 17-4PH / Type 630 / UNS S17400
For applications requiring high mechanical strength with useful corrosion resistance.
-
Representative Grades 304H / 304N / 310S / 321 / 316Ti / 347 / 347H / 904L / 254 SMO
For elevated-temperature, stabilized and enhanced corrosion-resistant service.
Note: Material availability, grade, condition and applicable specification shall be confirmed according to the required product size, quantity and purchase specification.
Process Control
Manufacturing Excellence
A controlled manufacturing process supports consistent quality from verified raw material to finished and age-hardened 17-4PH fasteners.
01
Raw Material Review
Material grade, condition, product form and batch documentation are reviewed before production.
02
Cutting & Preparation
Bars or forgings are prepared according to product dimensions and the selected manufacturing route.
03
Forging / CNC Machining
Fasteners are forged, turned or precision machined according to product geometry, quantity and drawing requirements.
04
Thread Production
Threads are rolled or cut according to product dimensions, material condition and applicable requirements.
05
Heat Treatment
Solution treatment and age hardening are performed according to the required material condition and governing specification.
06
Finishing & Packing
Finished parts are cleaned, inspected, identified and packed according to order and traceability requirements.
Quality Control
Quality Assurance & Full Traceability
Inspection and documentation are planned around the purchase specification, customer drawing and intended service. The agreed inspection scope is confirmed according to individual project requirements.
Material Verification
Material grade, heat or lot number and incoming documents are checked against the agreed order requirements before production.
Heat Number Traceability
Batch identity is maintained through production, inspection and packing so finished parts can be linked to their source material.
Dimensional Inspection
Critical dimensions, tolerances and product geometry are checked against the applicable dimensional standard or customer drawing.
Thread Inspection
Thread size, pitch and fit are verified using suitable gauges and measuring equipment. Additional profile verification can be arranged when specified.
PMI & Mechanical Testing
PMI, hardness, tensile or other testing can be performed or arranged when specified, depending on the material, test method and project requirements.
MTC / EN 10204 3.1 Documentation
MTC / EN 10204 3.1 documentation, dimensional reports, PMI reports and traceability records can be supplied when specified and applicable.
Inspection methods, sampling plans, acceptance criteria and document requirements should be confirmed before order placement.
Discuss Inspection & Documentation RequirementsIndustries Served
Applications & Industries
Our specialty-alloy fasteners support demanding projects across multiple industries. Final material selection must be based on the actual temperature, corrosion medium, mechanical load, applicable standards and required service life.
Oil & Gas
Flange bolting, valves, pressure equipment, piping systems and process units exposed to pressure, temperature or corrosive media.
Chemical Processing
Reactors, heat exchangers, scrubbers, pumps and equipment handling acids, chlorides or other aggressive process media.
Power Generation
Gas and steam turbines, boilers, furnaces, heat-treatment systems and high-temperature mechanical assemblies.
Marine & Offshore
Offshore platforms, seawater systems, marine equipment and desalination installations requiring corrosion-resistant fastening.
Aerospace
Engine, thermal and precision assemblies requiring high strength, temperature capability, low weight or controlled material performance.
Nuclear & Critical Equipment
Safety-critical bolting and engineered components requiring controlled materials, documentation and reliable long-term performance.
Not every alloy is suitable for every industry or service condition. Material suitability should be confirmed against the governing specification and actual operating environment.
Discuss Your ApplicationFrequently Asked Questions
Common questions about specialty-alloy fasteners, custom manufacturing, standards, inspection, documentation and procurement.
1. What specialty-alloy fastener products can you manufacture?
Our product range includes hex bolts, heavy hex bolts, stud bolts, nuts, washers, socket head cap screws, threaded rods and drawing-based fasteners or machined components. Availability depends on material grade, dimensions and quantity.
2. Can you manufacture non-standard parts from customer drawings?
Yes. We can review drawings for custom bolts, studs, nuts, washers, threaded parts and precision machined components. The quotation is based on material, dimensions, tolerances, heat treatment, inspection requirements and order quantity.
3. Which dimensional and thread standards can you support?
Products can be manufactured to applicable ISO, DIN, ASME and other recognized dimensional standards, or to customer drawings. Metric, UNC, UNF and other thread systems can be evaluated according to the product and specification.
4. Can you provide MTC and EN 10204 3.1 documentation?
Material test certificates and EN 10204 3.1 documentation can be supplied when specified and applicable to the ordered material and product. Certificate requirements should be confirmed before order placement.
5. Is PMI or third-party inspection available?
PMI and third-party inspection can be arranged when required. The test method, sampling plan, acceptance criteria and reporting requirements should be defined before production.
6. How do you maintain material traceability?
Heat or lot identification is maintained from incoming material through production, inspection and packing, subject to the agreed order and documentation requirements.
7. Can you supply bolts, nuts and washers as matched bolting sets?
Yes. Complete bolting sets can be supplied when requested, with thread compatibility, material selection, inspection and packaging defined for the order.
8. What are your MOQ and lead time?
MOQ and lead time depend on alloy grade, raw-material availability, product size, manufacturing route, heat treatment, testing and order quantity. Made-to-order specialty-alloy fasteners normally require a technical review before confirmation.
Request for Quotation
Custom & Standard
Specialty-Alloy Fasteners,
Direct From
Manufacturer.
Send us your fastener specifications, standards or drawings. Our engineering team will review your requirements and provide a detailed project-specific quotation.
ISO 9001
EN 10204 3.1
Global Shipping
Get Your Quote
Fill out the form below or email us directly with your drawings.