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Hamad Fasteners, based in Riyadh, Saudi Arabia, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners. One of our standout products, the Stainless Steel 420 Washers, is specifically crafted to handle the demands of applications that require durability, wear resistance, and a bit of corrosion protection. Made with precision and adhering to international standards, these washers are perfect for use in tooling, machinery, and automotive assemblies. Our commitment to reliability, high-quality materials, and prompt delivery has established Hamad Fasteners as a go-to supplier for stainless steel components across various industries in Saudi Arabia and the wider Gulf region.
These Stainless Steel 420 Washers are crafted from a martensitic stainless steel alloy that contains about 12–14% chromium and at least 0.15% carbon. This unique blend allows the washers to be hardened through heat treatment, giving them impressive wear resistance and mechanical strength. While they offer only moderate corrosion resistance compared to austenitic grades, 420 stainless steel excels in dry or mildly corrosive environments. These washers are magnetic and maintain excellent dimensional stability under load. With a hardness typically between 50 to 55 HRC after heat treatment, they are perfect for applications that involve friction, pressure, or repetitive motion.
| 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 420 Washers commonly used in mechanical assemblies where high surface hardness and strength are essential. They’re often found in pumps, valves, cutting tools, automotive parts, and heavy-duty machinery. These washers are particularly suited for equipment that endures high stress or frequent load cycles, providing protection against wear and galling. They also shine in industrial tools and fixtures where precision and durability are key. While they may not be the best choice for highly corrosive or marine environments, 420 washers perform exceptionally well in dry or controlled conditions that demand mechanical integrity and longevity.
At Hamad 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.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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