Premium Stainless Steel Fasteners by Ratnadeep Steel & Engg. Co.
Ratnadeep Steel & Engg. Co. is a leading manufacturer, exporter, and supplier of premium-quality Stainless Steel Fasteners in grades such as SS 304, 304L, 304H, 316H, 316Ti, 317/317L, 321/321H, 347/347H, 310/310S, and 904L. Manufactured from high-grade austenitic stainless steel using advanced processes, our fasteners ensure high strength, dimensional accuracy, and long-term reliability for critical applications requiring corrosion and heat resistance.
These stainless steel fasteners are widely preferred for their excellent resistance to corrosion, oxidation, and chemicals, along with strong load-bearing capacity. Low-carbon grades offer better weldability and intergranular corrosion resistance, while stabilized and high-temperature grades provide strength and oxidation resistance in elevated temperatures.
With precise threading, smooth finishes, and tight tolerances, our SS fasteners deliver dependable performance under vibration, pressure, and thermal stress. They are ideal for chemical, petrochemical, marine, power, oil & gas, construction, and general industrial applications.
Our Range of Stainless Steel Industrial Fasteners
- ASTM A194 Gr. 8 / 8M Stainless Steel Hex Nuts
- Stainless Steel Heavy Hex, Lock & Nylon Insert Nuts
- ASME SA194 SS Coupling & T-Nuts
- Available in SS 304, 304L, 316 & 316L Grades
- ASTM A193 B8 / B8M Stainless Steel Hex Bolts
- Heavy Hex, Machine & Structural Bolts
- SS 304, 304L, 316, 321 & 347 Bolts
- Precision Threading for Industrial Applications
- ASTM A193 Stainless Steel Socket Head Cap Screws
- Hex Head, Button Head & Set Screws
- SS 304, 316, 317 & 347H Grades
- High Strength Screws for Critical Assemblies
- ASME SA194 Stainless Steel Plain & Spring Washers
- Split, Ogee & Dock Washers
- SS 304, 304L, 310S & 904L Washers
- Corrosion Resistant & Load Distribution Designs
- ASTM A193 / A194 Stainless Steel Stud Bolts
- Single Ended, Double Ended & Fully Threaded Studs
- SS 304H, 316, 321 & 347 Grades
- Ideal for Flange & High-Pressure Joints
- ASTM A193 Stainless Steel Threaded Rods
- Continuous & Cut-to-Length Stud Rods
- SS 304, 316, 316Ti & 321 Grades
- Used in Structural & Anchoring Applications
SPECIFICATION OF STAINLESS STEEL FASTENERS
| Specification | ASTM / ASME A/SA 193 B8, B8M, B6, B8T, B8C, ASTM / ASME A/SA 194 Gr 8, 8M, 8C, 8T |
|---|---|
| Dimension Standards | DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards |
| Size Range | M3 – M56 | 3/6" to 2" | Custom Sizes |
| Length | 3 mm to 200 mm |
| Types | Nuts, Bolts, Screws, Sockets, Studs, Hex Set Screws, Socket Screws, Cap Screws, Pan Head Screws, Machine Screws, Allen Cap Screws, Wing Screws, Washers, Spring Washers, Anchors, Marine Anchors, Hexagon Nuts, Hex Nuts, Coupling Nuts, Hex Domed Cap Nuts, Square Nuts, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screws, Anchor Bolts, U-Bolts, J-Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Eye Bolts, Foundation Bolts, Structural Bolts |
💡 Practical Difference in Use
Use Stainless Steel Fasteners when: high corrosion resistance, strong clamping force, vibration resistance, and long-term joint reliability are required across industrial or structural applications. → Example: machinery assembly, construction structures, pipelines, automotive components, marine equipment, and industrial plants.
Applications of Stainless Steel Fasteners
Stainless steel fasteners offer high tensile strength, durability, and excellent resistance to rust and chemicals, making them suitable for both indoor and outdoor environments, including high-moisture and corrosive conditions.
- Construction & Infrastructure: Structural joints, bridges, railings, and architectural fixtures.
- Industrial & Manufacturing: Machinery assembly, equipment fastening, and plant maintenance.
- Marine & Coastal: Boat fittings, docks, and offshore structures exposed to saltwater.
When to Choose Stainless Steel Fasteners?
Stainless steel fasteners are selected for applications requiring corrosion resistance, strength, durability, and low maintenance across varied environments.
Choose Stainless Steel Fasteners when:
- Protection against rust and corrosion is essential
- High-strength and secure fastening is required
- Exposure to moisture, chemicals, or outdoor weather is expected
- Long service life with minimal maintenance is preferred
- Used in structural, mechanical, or industrial assemblies
Industries That Use Stainless Steel Fasteners
Stainless steel fasteners are widely used across industries that demand durability, corrosion resistance, and secure fastening performance.
Essential for strong and durable structural connections.
Uses
Steel frameworks, facades, handrails, and bridges.
Why Stainless Steel Fasteners?
High strength, weather resistance, and long lifespan.
Suitable for demanding and corrosive environments.
Uses
Equipment assembly, pipeline supports, and energy plants.
Why Stainless Steel Fasteners?
Corrosion resistance and dependable performance under stress.
Ideal for saltwater and humid conditions.
Uses
Shipbuilding, docks, and coastal installations.
Why Stainless Steel Fasteners?
Excellent resistance to salt corrosion and moisture.
Used in hygienic and clean environments.
Uses
Food machinery, processing lines, and sanitary equipment.
Why Stainless Steel Fasteners?
Non-reactive surface, easy cleaning, and hygiene compliance.
Usage Guide for Stainless Steel Fasteners
Provides secure mating with bolts for strong joints.
Choose Stainless Steel Nuts when
- Strong and vibration-resistant fastening is required
- Frequent assembly and disassembly is expected
- Corrosion resistance in outdoor or humid environments is needed
- Used in structural or machinery connections
High-strength fastening for load-bearing joints.
Choose Stainless Steel Bolts when
- Heavy-duty or structural fastening is required
- High tensile strength is necessary
- Outdoor or corrosive environments are involved
- Reliable long-term fastening is needed
Quick and secure fastening without nuts.
Choose Stainless Steel Screws when
- Direct fastening into material is needed
- Compact and flush installations are preferred
- Used in wood, metal, or plastic assemblies
- Corrosion-resistant fastening is required
Distributes load and protects surfaces.
Choose Stainless Steel Washers when
- Load distribution is necessary
- Surface protection is required
- Vibration loosening needs to be minimized
- Used with bolts and nuts in critical joints
Threaded on both ends for flange connections.
Choose Stainless Steel Stud Bolts when
- Flange connections are required
- High-pressure or high-temperature service exists
- Precise alignment is necessary
- Used in oil & gas or process industries
Continuous threading for versatile fastening.
Choose Stainless Steel Threaded Rods when
- Custom-length fastening is needed
- Suspension or support systems are used
- Used in construction or fabrication projects
- Corrosion resistance and strength are required
Our Industrial Fasteners are manufactured using precision forging and machining processes to ensure excellent dimensional accuracy, strength, and long-term performance. Each fastener undergoes strict quality inspections, including visual and dimensional checks, tensile testing, hardness testing, and thread gauging to verify compliance with specified tolerances.
Comprehensive chemical composition analysis and mechanical property testing are carried out to confirm material integrity and standard conformity. Where required, additional NDT methods such as ultrasonic testing, magnetic particle inspection (MPI), or dye penetrant testing (DPT) are performed to detect surface or internal defects. Controlled forging, heat treatment, and threading processes eliminate issues such as cracks, laps, and thread imperfections.
All fasteners are manufactured and tested in accordance with international standards including ASTM, ASME, ISO, DIN, BS, and IS specifications. Engineered for reliable performance in high-pressure, high-temperature, and corrosive environments, our fasteners are widely used across oil & gas, petrochemical, power generation, construction, and heavy engineering industries.
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