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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 fastening solutions, consistently delivering products that adhere to the highest international standards. Renowned for its precision, durability, and a customer-centric approach, the company serves a diverse array of industries throughout the Middle East and beyond. One of its standout products, the Stainless Steel 321 / 321H Washers, is particularly prized for its remarkable resistance to intergranular corrosion, impressive strength at high temperatures, and long-lasting performance. Crafted using cutting-edge technology and rigorous quality controls, these washers are perfect for critical applications in challenging environments.
These Stainless Steel 321 / 321H Washers are made from titanium-stabilized austenitic stainless steel, featuring 17–19% chromium and 9–12% nickel, with a controlled addition of titanium to prevent carbide precipitation. The 321H variant boasts a higher carbon content, which enhances its creep strength and mechanical stability at elevated temperatures. With a tensile strength of about 515 MPa and a yield strength of 205 MPa, these washers also show excellent resistance to oxidation up to 900°C. Their stability against sensitization guarantees outstanding mechanical performance during thermal cycling and in corrosive settings.
| 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 321/321H washers are ideal for high-temperature applications requiring durability and corrosion resistance. They are commonly used in aerospace components, automotive exhaust systems, and petrochemical equipment subjected to elevated temperatures. These washers also excel in chemical processing industries due to their resistance to sulfuric and phosphoric acids. Their robust properties make them suitable for demanding environments where reliable performance and strength are crucial, ensuring longevity and stability in various industrial applications.
You’ll find Stainless Steel 321 / 321H Washers widely utilized in sectors like petrochemical, power generation, aerospace, and chemical processing. They’re commonly found in heat exchangers, furnace equipment, boilers, pressure vessels, and exhaust systems, where high-temperature and oxidation resistance are crucial. Additionally, these washers are used in the food processing, pharmaceutical, and marine industries thanks to their durability and corrosion resistance. Their unique blend of toughness, stability, and resistance to intergranular corrosion makes them a go-to choice for fastening assemblies that face both thermal and mechanical stress.
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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