AStainless Steel Fasteners Manufacturer and Supplier in India
Stainless Steel Bolts, Stainless Steel Nuts, Stainless Steel Screws, Stainless Steel Washers, Stainless Steel Studs
Amardeep Steel is a trusted Manufacturer, Supplier, and Exporter of high-performance Stainless Steel Fasteners. Our stainless fasteners are engineered for durability, exceptional corrosion resistance, and reliable performance in the most demanding environments. We offer a comprehensive product line that includes SS Bolts, Stainless Steel Screws, SS Nuts, SS Socket Screws, and stainless steel washers, all precision-engineered to meet international standards. Our SS Fasteners are available in multiple grades, including Stainless Steel 304, 310, 309, 316, and 316S, ensuring superior strength and long service life. As a leading Manufacturer and Supplier, we provide a reliable supply of Stainless Steel Bolts and nuts for heavy engineering and marine-grade SS Fasteners for offshore use, all at a competitive price.
Specifications of Stainless Steel Fasteners :
Our SS Fasteners are built to global standards, offering strength, durability and reliable performance in demanding applications.
| Standard | ASTM / ASME A/SA 193 / 194 |
|---|---|
| Size | M02 to M33 |
| Length | UPTO 5 METERS |
| Specification | IS, BS, ASTM |
| Grade | 304, 304L, 316, 316L, 309, 310, 317L, 321, 347, 409, 410, 420, 430, 446, 202 etc. |
Equivalent Grades of Stainless Steel Fasteners
We offer stainless steel fasteners in multiple grades and standards, ensuring global compatibility and reliable performance across industries.
| Standard | Stainless Steel Grades Available | Equivalent UNS | Applications |
|---|---|---|---|
| ASTM A193 / SA193 | 304, 316, 316S, 310, 309 | S30400 / S31600 | Pressure vessels, pipelines |
| ASTM A194 / SA194 | 304, 316, 310 | S31000 / S30900 | Petrochemical, refineries |
| DIN / ISO / BS | 304, 316, 316S | — | Automotive, offshore |
Chemical Composition of Stainless Steel Fasteners
The chemical composition is crucial as it determines the properties of the stainless steel grade. Below is a breakdown of the typical elemental composition for common fastener grades.
| Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Mo (%) | Ni (%) | Cu (%) | Notes | Alternative Names |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A1 | ≤0.12 | ≤1 | ≤6.5 | ≤0.2 | 0.15−0.35 | 16−19 | ≤0.7 | 5−10 | 1.75−2.25 | 2, 3, 4 | 303, 303S31, 303S42, 1.4305 |
| A2 | ≤0.1 | ≤1 | ≤2 | ≤0.05 | ≤0.03 | 15−20 | - | 5−19 | ≤4 | 6, 7 | 304, 394S17 (BS 3111), 1.4301, 1.4567 |
| A3 | ≤0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 17−19 | - | 9−12 | ≤1 | 8 | 321, 1.4541, 347, 1.4550 |
| A4 | ≤0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 16−18.5 | 2−3 | 10−15 | ≤1 | 7, 9 | 316, 1.4401, 1.4578 |
| A5 | ≤0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 16−18.5 | 2−3 | 10.5−14 | ≤1 | 8, 9 | 316Ti, 1.4571, 316Cb, 1.4580 |
| C1 | 0.09−0.15 | ≤1 | ≤1 | ≤0.05 | ≤0.03 | 11.5−14 | - | ≤1 | - | 9 | 410, 1.4006 |
| C3 | 0.17−0.25 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | 16−18 | - | 1.5−2.5 | - | - | 431, 1.4057 |
| C4 | 0.08−0.15 | ≤1 | ≤1.5 | ≤0.06 | 0.15−0.35 | 12−14 | ≤0.6 | ≤1 | ≤2 | 9 | 416, 1.4005 |
| F1 | ≤0.12 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | 15−18 | - | ≤1 | - | 11, 12 | - |
Mechanical Properties of Stainless Steel Fasteners
The mechanical properties demonstrate how our SS Fasteners perform under load, stress, and temperature. The table below provides key values for our stainless steel fasteners, including tensile strength, elongation, and hardness.
| Grade | Property Class | Tensile Strength (MPa) | Yield Strength (0.2% Offset, MPa) | Elongation (A%) | Hardness (HRB / HRC) |
|---|---|---|---|---|---|
| A1 | 50 | ≥500 | ≥210 | ≥25 | ≤209 (HB) |
| A2 | 50 | ≥500 | ≥210 | ≥40 | ≤209 (HB) |
| A2 | 70 | ≥700 | ≥450 | ≥30 | ≤223 (HB) |
| A3 | 70 | ≥700 | ≥450 | ≥30 | ≤223 (HB) |
| A4 | 50 | ≥500 | ≥210 | ≥35 | ≤211 (HB) |
| A4 | 70 | ≥700 | ≥450 | ≥25 | ≤223 (HB) |
| A5 | 70 | ≥700 | ≥450 | ≥25 | ≤223 (HB) |
| C1 | 70 | ≥700 | ≥540 | ≥12 | 200−300 (HB) |
| C3 | 80 | ≥800 | ≥600 | ≥10 | 230−330 (HB) |
| C4 | 50 | ≥500 | ≥200 | ≥25 | ≤220 (HB) |
| F1 | 45 | ≥450 | ≥250 | ≥10 | ≤220 (HB) |
Physical Properties of Stainless Steel Fasteners
Physical properties show how SS fasteners react to heat, weight, and electrical factors. The table covers density, melting point, conductivity, and resistivity for key grades.
| Grade | Density (g/cm³) | Melting Point (°C) | Modulus of Elasticity (GPa) | Thermal Conductivity (W/mK) | Specific Heat (J/g°C) |
|---|---|---|---|---|---|
| A1 | 8.03 | 1398−1420 | 193 | 16.2 | 0.5 |
| A2 | 8.0 | 1400−1450 | 193 | 16.2 | 0.5 |
| A3 | 8.03 | 1398−1420 | 193 | 16.2 | 0.5 |
| A4 | 8.0 | 1375−1400 | 193 | 16.3 | 0.5 |
| A5 | 8.0 | 1375−1400 | 193 | 16.3 | 0.5 |
| C1 | 7.7 | 1480−1530 | 200 | 24.9 | 0.46 |
| C3 | 7.7 | 1480−1530 | 200 | 24.9 | 0.46 |
| C4 | 7.7 | 1480−1530 | 200 | 24.9 | 0.46 |
| F1 | 7.7 | 1480−1530 | 220 | 24.9 | 0.46 |
Types of Stainless Steel Fasteners
We are a leading Manufacturer, Supplier, and Exporter of a wide range of stainless fasteners including Stainless Steel Bolts and Stainless Steel Screws. Our comprehensive inventory includes:
Bolts, Nuts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.
Applications of Stainless Steel Fasteners
Stainless Steel Fasteners are trusted across industries due to their strength, durability, and resistance to corrosion. Their versatility makes them suitable for critical systems in harsh environments, high temperatures, and heavy-load applications. Below are the major industries where they play a vital role:
- Petrochemical & Refineries: Fasteners in grades like 304 and 316 are used in pipelines, reactors, and pressure vessels. They resist chemical corrosion and maintain structural integrity in aggressive refining conditions. Their dependability helps reduce downtime and supports long-term plant efficiency.
- Power Generation: High-temperature grades such as 310 are installed in boilers, turbines, and exhaust systems. These SS Fasteners retain strength and toughness even under continuous exposure to heat and pressure. They provide reliability needed for uninterrupted and safe power operations.
- Offshore & Marine: SS 316 and 316S fasteners offer excellent resistance to seawater and chloride attack. They are widely used in shipbuilding, offshore rigs, and coastal infrastructure where durability is critical. Their long service life reduces maintenance and replacement costs in harsh marine environments.
- Automotive & Railways: Fasteners are essential in engines, body structures, and railway equipment. They withstand vibration, wear, and constant movement without loosening or failure. Stainless steel’s strength and longevity make it ideal for ensuring passenger safety and reducing maintenance.
- Construction & Infrastructure: Anchor bolts, studs, and stainless steel washers are used in bridges, skyscrapers, and heavy structures. They deliver corrosion resistance for both indoor and outdoor installations. Their load-bearing capacity enhances the stability and durability of modern infrastructure.
- Chemical & Fertilizer Plants: Fasteners in tanks, pipelines, and processing units must handle acids and corrosive chemicals. Grades with molybdenum, such as SS 316, perform exceptionally in these environments. They safeguard equipment from failure and extend the life of critical chemical processing systems.
Frequently Asked Questions About Stainless Steel Fasteners
Q1: What are Stainless Steel Fasteners used for?
Stainless Steel Fasteners are used to securely join components in industries like petrochemical, power generation, construction, and marine.
Q2: What grades of SS Fasteners do you supply?
We supply SS 304, SS 310, SS 309, SS 316, and SS 316S fasteners under ASTM, ASME, DIN, and ISO standards.
Q3: Are Stainless Steel Fasteners corrosion resistant?
Yes, SS Fasteners offer excellent corrosion resistance due to their chromium content, making them suitable for harsh environments.
Q4: Can SS Bolts and Nuts be customized?
Yes, we manufacture custom SS Bolts, Nuts, Washers, and Screws based on client drawings and specifications.
Q5: What is the difference between SS 304 and SS 316 Fasteners?
SS 304 is versatile and economical, while SS 316 contains molybdenum for superior corrosion resistance in marine and chemical environments.
Q6: Do you provide test certificates with your SS Fasteners?
Yes, all fasteners are supplied with EN 10204 3.1/3.2 mill test certificates and third-party inspection reports if required.
Q7: What sizes of SS Bolts and Nuts are available?
We offer a wide range from M6 to M100, with special sizes available on request.
Q8: Can Stainless Steel Fasteners withstand high temperatures?
Yes, grades like SS 310 are specifically designed for high-temperature applications such as furnaces and boilers.
