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Rinku Fasteners, based in Kolkata, India, has built a solid reputation as a reliable manufacturer and supplier of high-performance Stainless Steel 420 Washers tailored to meet the rigorous demands of various industries. With a strong focus on quality, precision, and durability, they produce washers crafted from top-notch SS 420, which is celebrated for its remarkable hardness and resistance to corrosion. Each washer goes through strict manufacturing and inspection processes to ensure peak performance in a wide range of applications. These Stainless Steel 420 Washers are a go-to choice for industries that need dependable fastening solutions that can handle abrasion, high stress, and moderate corrosive conditions.
Stainless Steel 420 Washers are made up of high carbon and chromium, typically featuring 12–14% chromium and a minimum of 0.15% carbon, along with trace amounts of manganese, silicon, sulfur, and phosphorus. This martensitic stainless steel grade is known for its impressive hardness, wear resistance, and decent corrosion resistance when properly heat-treated. Its mechanical properties include high tensile strength, good fatigue resistance, and the potential to reach Rockwell hardness levels of up to 50 HRC. These traits make SS 420 washers perfect for heavy-load assemblies that require both strength and resistance to abrasion.
| 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.
Stainless Steel 420 Washers find their place in various applications where high strength, wear resistance, and dimensional stability are crucial. Industries like automotive, machinery, aerospace, petrochemicals, and marine engineering rely on these washers to ensure secure load distribution, resist vibrations, and protect assembly components. Their durability against abrasion makes them ideal for high-friction environments, precision instruments, and heavy-duty applications.
At Rinku Fasteners, we ensure the highest quality in the packaging of our Stainless Steel 420 washers. Each washer is thoroughly inspected and individually secured to prevent damage during transport. They are then placed in tightly labeled boxes with product details and detailed quantities. Our packaging is designed to protect the environment and physical impact, ensuring that your high-performance washer arrives in prime condition and ready for immediate use.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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