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MUKAU FASTENERS, a well-respected manufacturer and supplier located in Kinshasa, Congo, specializes in top-notch Stainless Steel 321/321H Washers that are built to last. These washers are titanium-stabilized, making them perfect for high-temperature and chemically challenging environments. Crafted with precision and a commitment to international standards, these washers excel in applications that demand thermal stability and resistance to oxidation. MUKAU FASTENERS serves a variety of industries, including chemical processing, power generation, marine, and aerospace, providing reliable fastening solutions that hold up under extreme conditions.
Stainless Steel 321/321H Washers are made up of 17–19% chromium, 9–13% nickel, and titanium (which has five times the carbon content) to stabilize the alloy and prevent carbide precipitation during welding. The 321H version has a higher carbon content (0.04–0.10%), which boosts its strength and creep resistance at high temperatures. These washers boast a tensile strength of 515–750 MPa, yield strength of 205–240 MPa, along with impressive elongation and hardness. The blend of titanium and chromium provides outstanding resistance to oxidation, corrosion, and heat, making them perfect for high-temperature applications.
| 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 commonly found in chemical processing plants, power generation systems, exhaust manifolds, heat exchangers, and pressure vessels, thanks to their remarkable resistance to oxidation and intergranular corrosion. They are particularly suited for industries like aerospace, marine, refining, and food processing, where stability under heat and stress is essential. These washers ensure secure load distribution and prevent loosening in high-temperature or corrosive environments. MUKAU FASTENERS’ Stainless Steel 321/321H Washers are the go-to choice for reliable performance.
At Mukau Fasteners, we prioritize the safety and quality of our Stainless Steel 321/321H washers when fastening them. Each washer is thoroughly inspected and wrapped in protective packaging to prevent any damage. They are then placed in clearly labeled sturdy boxes with detailed product specifications and quantities. Our packaging is designed to protect the environment and physical impact, ensuring that your high-performance washer arrives in perfect condition and ready for immediate use quite.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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