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Aria Fasteners, located in Hamilton, New Zealand, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fastening solutions. Their Stainless Steel 321 / 321H Washers are crafted to deliver exceptional corrosion resistance, mechanical strength, and durability, especially in high-temperature and challenging environments. With a focus on precision and rigorous quality control, these washers guarantee even load distribution and secure fastening in various assemblies. Aria Fasteners caters to a range of industries, including aerospace, petrochemical, power generation, and thermal processing, providing components that are designed to perform reliably under thermal cycling and extreme service conditions.
The Stainless Steel 321 / 321H Washers are made from a titanium-stabilized austenitic stainless steel alloy, which offers remarkable resistance to intergranular corrosion when exposed to high temperatures. The 321H grade, featuring a higher carbon content, ensures improved strength at elevated temperatures while still maintaining long-lasting corrosion resistance. These washers boast strong mechanical properties, thermal stability, and toughness, and their precision manufacturing ensures they fit perfectly with corresponding bolts, nuts, and studs, providing secure and dependable clamping.
| 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.
These washers find extensive use in industries that demand heat-resistant, corrosion-resistant, and mechanically reliable fastening solutions. They are particularly well-suited for boiler assemblies, heat exchangers, furnace components, flanged joints, and industrial machinery that face high temperatures. Additionally, Stainless Steel 321 / 321H Washers are utilized in chemical processing equipment, aerospace structures, and other high-temperature assemblies where secure and even load distribution is essential. Their unique blend of thermal resistance, mechanical strength, and corrosion protection makes them a trustworthy choice for demanding applications.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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