Stainless Steel 304 Bolts Supplier & Exporter
Aurum Overseas is a leading Stainless Steel 304 Bolts Supplier/Exporter, supplying premium quality to industrial buyers worldwide. These austenitic stainless steel bolting solutions are widely used across chemical processing, food processing, power generation, marine engineering, construction, pressure vessels, and industrial fabrication industries requiring dependable corrosion resistance and long service life.
Among all stainless steel fastener grades, SS 304 Bolts remain one of the most widely used due to their excellent balance of corrosion resistance, mechanical strength, fabrication flexibility, and cost-effectiveness. For applications requiring improved weldability and lower carbon content, industries prefer SS 304L Bolts, while elevated temperature service applications often require SS 304H Bolts because of their higher carbon content and improved high-temperature strength.
As a trusted Stainless Steel 304 Bolts Supplier, Aurum Overseas supplies certified stainless steel bolting solutions manufactured according to ASTM, ASME, DIN, ISO, ANSI, and international standards. Our products are widely exported to the USA, Europe, UAE, Saudi Arabia, and other global industrial markets.
SS 304 / 304L / 304H Stainless Steel Bolts – Product Overview
The 304 series stainless steel family belongs to the austenitic stainless steel category and offers excellent corrosion resistance in atmospheric, chemical, industrial, and moderately aggressive environments. These grades are among the most commonly specified stainless steel fasteners used globally across multiple engineering sectors.
SS 304 Bolts provide excellent general-purpose corrosion resistance and good mechanical strength for industrial and commercial applications. SS 304L Bolts, with lower carbon content, reduce carbide precipitation during welding and are ideal for fabricated equipment requiring welded assemblies. SS 304H Bolts contain higher carbon content specifically designed for elevated temperature service conditions where improved creep resistance is required.
Because of their excellent versatility, these stainless steel bolts are commonly used in piping systems, heat exchangers, pressure vessels, structural assemblies, petrochemical plants, marine equipment, pumps, valves, industrial fabrication, and food processing equipment.
Specifications of Stainless Steel 304 / 304L / 304H Bolts
| Specification | Details |
|---|---|
| Product | Stainless Steel 304 / 304L / 304H Bolts |
| Grades | SS 304, SS 304L, SS 304H |
| ASTM Standards | ASTM A193 / ASTM A194 |
| ASME Standards | ASME SA193 / SA194 |
| International Standards | DIN, ASTM, BS, ISO, ANSI, JIS |
| Bolt Size | M3 – M56 |
| Extended Size Range | M2 – M100 |
| Diameter Range | M3 – M60 |
| Length | 3 mm – 200 mm |
| Extended Length | 6 mm – 500 mm |
| Surface Finish | Passivation / Plain |
| Standards | ISO 4017, DIN931, GB5783 |
| Certification | EN 10204 3.1 / MTC |
Mechanical Properties of SS 304, SS 304L & SS 304H Bolts
Since each grade has different carbon content and service characteristics, mechanical properties vary slightly.
| Property | SS 304 | SS 304L | SS 304H |
|---|---|---|---|
| Tensile Strength | 515 MPa | 485 MPa | 515 MPa |
| Yield Strength | 205 MPa | 170 MPa | 205 MPa |
| Elongation | 40% | 40% | 40% |
| Hardness | 201 HB Max | 201 HB Max | 201 HB Max |
| Density | 8.0 g/cm³ | 8.0 g/cm³ | 8.0 g/cm³ |
| Operating Temperature | Moderate | Moderate | High Temperature Service |
Chemical Composition of SS 304, SS 304L & SS 304H Bolts
The primary difference between these three grades lies in carbon content.
| Element | SS 304 | SS 304L | SS 304H |
|---|---|---|---|
| Chromium | 18.0 – 20.0 | 18.0 – 20.0 | 18.0 – 20.0 |
| Nickel | 8.0 – 10.5 | 8.0 – 12.0 | 8.0 – 10.5 |
| Carbon | 0.08 Max | 0.03 Max | 0.04 – 0.10 |
| Manganese | 2.0 Max | 2.0 Max | 2.0 Max |
| Silicon | 1.0 Max | 1.0 Max | 1.0 Max |
| Phosphorus | 0.045 Max | 0.045 Max | 0.045 Max |
| Sulfur | 0.03 Max | 0.03 Max | 0.03 Max |
| Iron | Balance | Balance | Balance |
Equivalent Grades of Stainless Steel 304 Series Bolts
| Standard | SS 304 | SS 304L | SS 304H |
|---|---|---|---|
| UNS | S30400 | S30403 | S30409 |
| ASTM | 304 | 304L | 304H |
| EN | 1.4301 | 1.4307 | 1.4948 |
| DIN | X5CrNi18-10 | X2CrNi18-9 | X6CrNi18-10 |
| JIS | SUS304 | SUS304L | SUS304H |
Types of Stainless Steel 304 / 304L / 304H Bolts Available
These stainless steel grades are available in multiple bolting configurations depending on assembly and industrial application requirements.
Bolt Type
| Bolt Type | Applications |
|---|---|
| Hex Bolts | General industrial fastening |
| Stud Bolts | Flange assemblies |
| Anchor Bolts | Structural installations |
| Heavy Hex Bolts | Pressure systems |
| U Bolts | Pipe support systems |
| Eye Bolts | Rigging applications |
| Socket Head Bolts | Precision engineering |
| Fully Threaded Bolts | Maximum engagement applications |
| Carriage Bolts | Structural assemblies |
| Custom Bolts | Project-specific manufacturing |
Available Thread Options
| Thread Type | Availability |
|---|---|
| UNC Threads | Available |
| UNF Threads | Available |
| Metric Threads | Available |
| BSW Threads | Available |
| BSF Threads | Available |
| Custom Thread Configurations | Available |
Stainless Steel 304 Bolts Suppliers in Europe for Chemical Processing & Industrial Fabrication Applications
Europe has extensive demand for SS 304, SS 304L, and SS 304H Bolts across chemical processing, food manufacturing, industrial fabrication, pharmaceutical processing, and engineering sectors. Their excellent corrosion resistance and versatility make them one of the most widely used stainless steel bolting solutions throughout European industrial markets.
Aurum Overseas supplies certified stainless steel bolts to Germany, France, Italy, Spain, the Netherlands, and other European countries. Our products are widely used in pressure vessels, piping systems, heat exchangers, structural assemblies, and industrial processing equipment requiring dependable corrosion-resistant fastening solutions.
Stainless Steel 304 Bolts Exporters in USA for Process Industry & Manufacturing Applications
The United States remains a major market for SS 304 Series Bolts due to large-scale investments in food processing, petrochemical plants, pharmaceutical manufacturing, construction, industrial processing, and heavy engineering industries. These grades provide excellent corrosion resistance and cost-effective performance for a wide range of industrial applications.
Aurum Overseas exports 304 Stainless Steel Bolts across the USA with complete inspection reports, export documentation, and quality certifications meeting international procurement requirements.
Stainless Steel 304 Bolts Suppliers in Gulf Countries for Infrastructure & Petrochemical Projects
The Gulf region continues to generate strong demand for stainless steel fastening systems due to rapid infrastructure development, refinery expansion, petrochemical processing, desalination facilities, and industrial growth. SS 304, 304L, and 304H Bolts are commonly specified for equipment operating in corrosive industrial environments.
Aurum Overseas exports stainless steel bolting solutions to UAE, Saudi Arabia, Qatar, Oman, Kuwait, and Bahrain. Our products are widely used in industrial fabrication, structural systems, piping networks, process equipment, and petrochemical facilities requiring reliable corrosion-resistant fastening solutions.
Why Industrial Buyers Choose Aurum Overseas for Stainless Steel 304 Series Bolts
Aurum Overseas supplies premium quality stainless steel bolting solutions designed to meet international quality standards and demanding industrial applications. Our experience supplying industrial fasteners globally enables us to support both standard procurement and project-based supply requirements.
Industrial buyers choose us because we provide consistent product quality, competitive pricing, technical support, and dependable export logistics for international customers across multiple industrial sectors.
- Certified Material Testing Reports
- Custom Manufacturing Support
- Third Party Inspection
- Worldwide Export Logistics
- Competitive Bulk Pricing
- Fast Production & Delivery
- Full Material Traceability
- International Standard Compliance
Industries Using SS 304 / 304L / 304H Bolting Solutions
These stainless steel grades are used extensively across industries requiring corrosion-resistant fastening systems.
| Industry | Applications |
|---|---|
| Chemical Processing | Reactors and process equipment |
| Food Processing | Hygienic processing systems |
| Pharmaceutical | Processing and storage systems |
| Oil & Gas | Structural and piping systems |
| Petrochemical | Processing equipment |
| Marine Engineering | Corrosion resistant assemblies |
| Construction | Structural fastening |
| Water Treatment | Desalination and filtration systems |
| Power Generation | Boiler and piping systems |
| Industrial Fabrication | Equipment manufacturing |
Stainless Steel 304 / 304L / 304H Bolts Grade Comparison for Corrosion Resistant Applications
SS 304 Bolts are widely used for general industrial applications requiring dependable corrosion resistance and cost-effective performance. SS 304L Bolts are preferred when welding is involved because lower carbon content minimizes carbide precipitation and improves weld integrity. For elevated temperature service conditions, SS 304H Bolts offer improved high-temperature strength and creep resistance.
For applications requiring enhanced resistance against aggressive chemical environments and sulfuric acid exposure, industrial buyers often evaluate SS 904L Bolts. In marine and chloride-rich environments requiring superior resistance to pitting and crevice corrosion, many engineers compare SMO 254 Bolts for long-term corrosion protection.
Selecting between these grades depends on temperature requirements, welding requirements, corrosion exposure, service conditions, and overall project specifications.
Frequently Asked Questions
1. What is Stainless Steel 304?
Stainless Steel 304 is an austenitic chromium-nickel stainless steel known for excellent corrosion
resistance, good mechanical strength, and excellent fabrication properties. It is one of the most widely
used stainless steel grades for industrial fastening applications.
2. What is UNS S30400?
UNS S30400 is the official material designation for standard Stainless Steel 304. It is widely used in
chemical processing, food processing, pharmaceutical equipment, and industrial fabrication applications
requiring corrosion-resistant bolting solutions.
3. What is UNS S30403?
UNS S30403 is the material designation for Stainless Steel 304L. This low-carbon stainless steel grade
is preferred for welded assemblies where improved corrosion resistance after welding is important.
4. What is the Difference Between SS 304 and SS 304L Bolts?
The primary difference is carbon content. SS 304L Bolts contain lower carbon, which improves weldability
and minimizes carbide precipitation, while standard SS 304 Bolts are used for general-purpose
corrosion-resistant applications.
5. Do You Supply SS 304 Bolts in the USA?
Yes. We export SS 304, SS 304L, and SS 304H Bolts throughout the USA for chemical processing, industrial
manufacturing, pharmaceutical processing, food processing, and engineering applications requiring
corrosion-resistant fastening solutions.
6. Do You Export Bolts to European Countries?
Yes. Aurum Overseas exports certified SS 304, SS 304L, and SS 304H Bolts to Germany, France, Italy,
Spain, Netherlands, Belgium, Poland, and other European industrial markets with complete inspection
reports and export documentation.
Request a Quote for Stainless Steel 304 Bolts
Looking for a trusted Stainless Steel 304 Bolts Supplier for industrial, chemical processing, marine, infrastructure, or engineering applications?
Aurum Overseas supplies certified stainless steel bolting solutions manufactured to international standards with complete documentation, competitive pricing, and reliable global delivery support. Contact our team today for technical assistance and project-based quotations.
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