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Punit Fasteners, a well-respected manufacturer and supplier based in Delhi, India, specializes in high-quality Stainless Steel 420 Washers that are crafted for outstanding hardness, strength, and wear resistance. These washers find their place in various industries, including automotive, aerospace, tooling, and heavy machinery, where they play a crucial role in ensuring secure load distribution and stability in fastening systems that face heavy mechanical loads and abrasive conditions. Built to meet international standards, Stainless Steel 420 Washers promise reliable performance and longevity. Punit Fasteners is committed to delivering precision-engineered products that cater to the needs of industries that demand robust and durable fastening solutions.
Made from a high-carbon martensitic stainless steel alloy with about 12–14% chromium, these washers boast enhanced carbon levels that allow for excellent hardness after heat treatment. They achieve a tensile strength between 700–1100 MPa and maintain their shape even under high-stress situations. While their corrosion resistance is moderate compared to austenitic grades, their remarkable mechanical strength, durability, and resistance to abrasion make them perfect for tough fastening applications where a long service life is essential.
| 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 are ideal for applications that require high strength and durability. They are commonly used in automotive components such as engine parts and exhaust systems, where wear and tear resistance is required. These washing machines are also suitable for construction and industrial equipment, providing reliable operation at high temperatures and pressures. Their strength makes them suitable for use with tools and equipment in sensitive conditions, providing long service life and reliability
Stainless Steel 420 Washers are widely utilized in sectors that require fastening components capable of withstanding heavy loads and harsh conditions. In the automotive and aerospace industries, you’ll find them in engines, braking systems, and drivetrain assemblies, where strength and stability are non-negotiable. Heavy machinery and tooling sectors rely on them for high-wear applications where durability is key. They’re also used in pumps, valves, and precision equipment, ensuring dependable performance in environments where standard stainless steels might struggle against mechanical stress and wear.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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