SS 321 nut bolt exporter
SS 321 nut bolt exporter specializes in supplying high-quality stainless steel fasteners designed for demanding industrial applications. Manufactured from grade 321 stainless steel, these components offer exceptional resistance to corrosion, oxidation, and high temperatures, making them ideal for use in harsh environments. The material's enhanced chromium and nickel content, combined with titanium stabilization, ensures stability during thermal cycling, which is critical for industries such as aerospace, petrochemical, and power generation.
The product range includes precision-engineered nuts and bolts that conform to international standards such as ASTM A194 and A193, ensuring compatibility and reliability in assembly processes. These fasteners feature excellent mechanical properties, including tensile strength and hardness, to withstand heavy loads and vibrations. Available in various sizes and thread configurations, they cater to diverse industrial requirements, from structural assemblies to high-pressure equipment.
Applications for these stainless steel fasteners span multiple sectors, including chemical processing plants, marine engineering, and automotive manufacturing. Their resistance to scaling and pitting in oxidizing environments makes them particularly suitable for exhaust systems, heat exchangers, and furnace parts. Additionally, the non-magnetic nature of grade 321 stainless steel supports its use in electronic and instrumentation setups where magnetic interference must be minimized.
Export readiness is a key focus for suppliers in this segment, involving stringent quality control measures, certification compliance, and customized packaging to meet international shipping standards. Fasteners undergo rigorous dimensional inspection and surface finish testing to ensure consistency and performance across global markets. With efficient logistics and adherence to export documentation requirements, these products are reliably delivered to industrial buyers worldwide, supporting their operational continuity and project timelines.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why SS 321 nut bolt exporter Are Preferred by Global Buyers
- ✔ Factory Pricing: Direct manufacturer rates with bulk stock
- ✔ Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- ✔ Export-Ready: Sea-worthy packaging for on-time delivery
- ✔ Fast RFQs: Quick quotes for custom sizes & quantities
- ✔ Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 15+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is SS 321 nut bolt exporter
- 2. How to Choose the Right Manufacturer
- 3.Comparison of SS 321 nut bolt exporter
- 4. Why Global Buyers Source from Jainam Ferro Alloys
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21. Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Jainam Ferro Alloys
How to Choose the Right SS 321 nut bolt exporter
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among SS 321 nut bolt exporter
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | ASME / ASTM / EN |
| Inspection & MTCs | Limited | Inconsistent | EN 10204 3.1 / 3.2 |
| Export Experience | Low | Medium | 50+ countries |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Jainam Ferro Alloys
Jainam Ferro Alloys is a trusted ISO 9001:2015 certified manufacturer and global exporter of ferro alloys and metal products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Lower Manufacturing & Sourcing Costs | Save up to 15–20% compared to European suppliers |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| In-House Testing & Inspection Facilities | Strict chemical, mechanical & dimensional quality checks |
| Bulk Stock & High Production Capacity | Fast order fulfillment and stable supply for large projects |
| Custom Sizes & Drawing-Based Manufacturing | Products manufactured exactly to buyer specifications |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| Faster Global Shipping Routes | Optimized logistics for Middle East, Africa & Southeast Asia |
| Technical & After-Sales Support | Project assistance, documentation & responsive RFQ handling |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
Features of SS 321 Nut Bolt
- ✔ Excellent corrosion resistance in aggressive environments
- ✔ High-temperature strength and stability
- ✔ Good weldability and formability
- ✔ Superior resistance to intergranular corrosion
- ✔ Enhanced oxidation resistance up to 900°C
- ✔ Versatile applications in aerospace, chemical, and petrochemical industries
Technical Overview of SS 321 Nut Bolt
| Product | Composition | Usage | Standards |
|---|---|---|---|
| SS 321 Nut | Carbon max 0.08%, Chromium 17-19%, Nickel 9-12%, Titanium 5xC min | Used in high-temperature applications and corrosive environments | ASTM A194, ASME SA194 |
| SS 321 Bolt | Carbon max 0.08%, Chromium 17-19%, Nickel 9-12%, Titanium 5xC min | Ideal for use in chemical processing and oil & gas industries | ASTM A320, ASME SA320 |
| SS 321 Fasteners | Carbon max 0.08%, Chromium 17-19%, Nickel 9-12%, Titanium 5xC min | Suitable for aerospace and marine applications | DIN 933, ISO 3506 |
Specifications Table
| Material | Stainless Steel 321 |
|---|---|
| Grades | ASTM A193, ASTM A320, ASTM A479 |
| Standard | ISO 3506, ASTM F593 |
| Size Range | M3 to M30 |
| Length | 10mm to 300mm |
| Form | Hexagonal, Socket, Round |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| SS 321 Nut Bolt | Fe, C, Mn, Si, Cr (19-22%), Ni (9-12%), Ti (5xC min) | High-temperature applications, chemical processing, and aerospace components |
| SS 321H Nut Bolt | Fe, C (max 0.08%), Mn, Si, Cr (19-22%), Ni (9-12%), Ti (5xC min) | High-temperature service, pressure vessels, and gas turbine components |
| SS 321L Nut Bolt | Fe, C (max 0.03%), Mn, Si, Cr (19-22%), Ni (9-12%), Ti (5xC min) | Welded structures, applications requiring low carbon content |
| SS 321H (S) Nut Bolt | Fe, C (max 0.08%), Mn, Si, Cr (19-22%), Ni (9-12%), Ti (5xC min), S (0.03% max) | High-strength applications in corrosive environments |
| SS 321 Nut Bolt (Cold Worked) | Fe, C, Mn, Si, Cr (19-22%), Ni (9-12%), Ti (5xC min) | Applications requiring enhanced mechanical properties |
Available Sizes of SS 321 Nut Bolt (MM)
| Size (MM) | Size (MM) |
|---|---|
| 6 | 8 |
| 10 | 12 |
| 16 | 20 |
| 24 | 30 |
| 36 | 42 |
| 48 | 56 |
| 60 | 70 |
| 80 | 90 |
| 100 | 110 |
| 120 | 140 |
Chemical Properties of SS 321
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 17.0 - 19.0 |
| Nickel (Ni) | 9.0 - 12.0 |
| Titanium (Ti) | 5 x C min - 0.70 max |
Mechanical Properties of SS 321
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 |
| Yield Strength (MPa) | 310 |
| Elongation (%) | 40 |
| Hardness (HB) | 217 |
| Modulus of Elasticity (GPa) | 193 |
SS 321 – Physical & Thermal Properties
Density of SS 321
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.93 g/cm³ | 0.286 lb/in³ |
Melting Point of SS 321
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1450 - 1510 °C | 2642 - 2750 °F |
Specific Heat of SS 321
| Specific Heat of SS 321 | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Annealed |
| 480 | 100 - 600 | Annealed |
| 460 | 600 - 1000 | Annealed |
Electrical Resistivity of SS 321
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 73 | 20 | Annealed |
| 75 | 100 | |
| 77 | 200 | |
| 80 | 300 | |
| 83 | 400 | |
Manufacturing Process & Heat Treatment of SS 321 Nut Bolt
Annealing
Annealing of SS 321 nut bolts is performed to relieve internal stresses and improve ductility. This process involves heating the bolts to a temperature range of 900°C to 1050°C, followed by a controlled cooling process. The annealing stage enhances the material's performance, making it suitable for various applications in corrosive environments.
Forging
The forging process for SS 321 nut bolts involves shaping the metal using compressive forces. This is typically done at high temperatures, allowing the material to be formed into the desired shape without cracking. Forging improves the mechanical properties of the bolts, resulting in enhanced strength and durability.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1050 - 1150 | Oil | To increase hardness and strength |
| Tempering | 600 - 700 | Air | To reduce brittleness and improve toughness |
| Stress Relieving | 400 - 600 | Air | To remove residual stresses from the manufacturing process |
The combination of these processes ensures that SS 321 nut bolts meet the stringent requirements for strength, corrosion resistance, and durability, making them ideal for various industrial applications.
Various Types
SS 321 Hex Nut
- Dimensions: M4 to M30
- Condition: Hot Rolled, Cold Drawn
- Applications: Aerospace, Chemical Processing
SS 321 Bolt
- Dimensions: M6 to M20
- Condition: Passivated
- Applications: Oil and Gas, Marine
SS 321 Stud Bolt
- Dimensions: M8 to M24
- Condition: Annealed
- Applications: Power Generation, Construction
SS 321 Lock Nut
- Dimensions: M5 to M25
- Condition: Heat Treated
- Applications: Automotive, Industrial Equipment
Applications & Uses
- Oil & Gas Industry
- Petrochemical Plants
- Water Treatment Plants
- Pharmaceutical Industry
- Food & Beverage Industry
- Automobile Industry
Industries We Serve
Our alloys are widely used across:
- Steel Plants
- Foundries & Casting Units
- Automobile Industry
- Shipbuilding & Marine
- Oil & Gas
- Engineering Components
- Heavy Industrial Machinery
latest Price List of SS 321 Nut Bolt
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| SS 321 Nut Bolt | 3 mm | $5.00 – $6.00 | ₹410 – ₹492 |
| SS 321 Nut Bolt | 6 mm | $5.50 – $7.00 | ₹450 – ₹575 |
| SS 321 Nut Bolt | 10 mm | $6.00 – $8.00 | ₹492 – ₹657 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for SS 321 Nut Bolt.
MOQ & Payment Terms
Minimum Order Quantity: 25–100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
Cities We Suppllied In India
| Supply Cities | |||||
|---|---|---|---|---|---|
| Mumbai | Delhi | Pune | Chennai | Hyderabad | Bengaluru |
| Ahmedabad | Rajkot | Coimbatore | Kolkata | Bhopal | Surat |
We exported to 50+ countries worldwide.
| Exported Countries | |||||
|---|---|---|---|---|---|
| USA | UK | UAE | Germany | South Africa | Australia |
| Italy | Canada | Netherlands | Qatar | Saudi Arabia | Malaysia |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards. Below are our key certifications.
Compliance
ISO 14001:2015
Importer Exporter
ISO 45001:2018
ISO 9001:2015
Udyam Registration
Quality Inspection & Testing
At Jainam Ferro Alloys, all products are checked through strict quality inspection and testing to meet international standards such as ASTM, ASME, EN, and DIN. This ensures consistent quality, accurate dimensions, and full material traceability.
- ✔ Chemical composition testing
- ✔ Mechanical tests such as tensile and hardness
- ✔ Dimensional inspection as per standard tolerances
- ✔ PMI, ultrasonic, and visual inspection (if required)
- ✔ EN 10204 3.1 / 3.2 test certificates
- ✔ Third-party inspection by SGS, TUV, BV, or Lloyd’s
Our quality systems support reliable supply for oil & gas, petrochemical, power, marine, and heavy engineering projects.
People Also Search For
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Frequently Asked Questions
About JAINAM FERRO ALLOYS
- ✔ Decades of experience in stainless steel, carbon steel, and alloy steel manufacturing
- ✔ ISO 9001:2015 certified company ensuring strict quality control standards
- ✔ Specialized in cold drawn pipes and tubes processing
- ✔ State-of-the-art manufacturing facilities with modern machinery
- ✔ Precision-engineered products with consistent quality and reliability
- ✔ Customized steel solutions as per client drawings and specifications
- ✔ Compliance with international industry standards
- ✔ Trusted supplier for critical industrial applications worldwide
