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Ramu Fasteners is a reputable manufacturer and supplier of Stainless Steel 321 / 321H Washers, proudly based in Hyderabad, India. They focus on crafting high-quality washers that offer exceptional corrosion resistance, strength, and reliable performance even in high-temperature settings. With state-of-the-art manufacturing facilities, precise machining, and rigorous quality control measures, Ramu Fasteners guarantees that their products are dimensionally accurate and consistently high in quality. Their Stainless Steel 321 / 321H Washers are specifically designed to endure tough thermal and chemical conditions while ensuring even load distribution and preventing fasteners from loosening. Catering to a diverse array of industries, the company provides robust and trustworthy fastening solutions.
These washers are made from titanium-stabilized austenitic stainless steel, which includes chromium and nickel. The addition of titanium significantly boosts resistance to intergranular corrosion, especially after welding. The Grade 321H variant, with its higher carbon content, enhances creep strength and stability at elevated temperatures. These washers are known for their impressive tensile strength, toughness, and oxidation resistance, all while maintaining their shape under thermal stress. Stainless Steel 321 / 321H Washers guarantee dependable load distribution and mechanical integrity in high-temperature and corrosive settings, making them perfect for critical industrial applications that require durable and high-performance fastening components.
| Specifications | ASTM A 193 ASME SA 193 |
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3 mm to 200 mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | Wedge Lock Washers, Square Washer, Spring Lock Washer, Self Locking Washer, Sealing Washer, Plain Flat Washer, Ogee Washer, Industrial Washer, Hex Washer, Finishing Washer, Fender Washer, Conical Washer, Countersunk Washer, Square Beveled Washer, Curved Wave Washer, External Tooth Lock Washer, Internal Tooth Lock Washers, Internal Tab Washers, lock washer Fastener, Wedge Lock Washers, Tab Washer, Structural Washers. |
| Grade | AISI | Stainless Steel Bolts Chemical Composition (% maxima unless stated) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | ||||||
| A1 | SS 202 | 0.12 | 1.0 | 6.5 | 0.20 | 0.15-0.35 | 16,0 – 19,0 | 0.7 | 5,0 – 10,0 | 1.75-2.25 | ||||
| A2 | SS 304 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 15,0 – 20,0 | 0.0 | 8,0 – 19,0 | 4.0 | ||||
| A3 | SS 321 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 17,0 – 19,0 | 0.0 | 9,0 – 12,0 | 1.0 | ||||
| A4 | SS 316 | 0.08 | 1.0 | 2.0 | 0.05 | 0.03 | 16,0 – 18,5 | 2,0 – 3,0 | 10,0 – 15,0 | 4.0 | ||||
| C1 | SS 410 | 0.09-0.15 | 1.0 | 1.0 | 0.05 | 0.03 | 11,5 – 14,0 | – | 1 | – | ||||
| C3 | SS 431 | 0.17-0.25 | 1.0 | 1.0 | 0.04 | 0.03 | 16,0 – 18,0 | – | 1,5 – 2,5 | – | ||||
| C4 | SS 416 | 0.08-0.15 | 1.0 | 1.5 | 0.06 | 0.15-0.35 | 12,0 – 14,0 | 0.6 | 1 | – | ||||
| F1 | SS 430 | 0.12 | 1.0 | 1.0 | 0.04 | 0.03 | 15,0 – 18,0 | 0.0 | 1 | – | ||||
| Stainless Steel Bolts | Class | Tensile Stress Rm MPa (N/mm2) minimum | Yield Strength Rp 0.2 Mpa (N/mm2) minimum | AL Minimum Elongation | Diameter |
|---|---|---|---|---|---|
| Stainless Steel Bolts | 70 | 700 | 450 | 0.4d | =<M20 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
You’ll find Stainless Steel 321 / 321H Washers widely utilized in industries that need corrosion-resistant, high-temperature, and mechanically reliable fastening solutions. They are commonly found in chemical processing plants, petrochemical refineries, oil and gas equipment, power generation systems, heat exchangers, and exhaust systems. These washers excel in bolted connections that face thermal cycling, high stress, and corrosive environments. With a long service life, low maintenance needs, and consistent performance, they are an excellent choice for demanding applications.
At Ramu Fasteners, we prioritize the safety and quality of our Stainless Steel 321/321H washers when fastening them. Each washer is thoroughly inspected and wrapped in protective packaging to prevent any damage. They are then placed in clearly labeled sturdy boxes with detailed product specifications and quantities. Our packaging is designed to protect the environment and physical impact, ensuring that your high-performance washer arrives in perfect condition and ready for immediate use quite.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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