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Stainless Steel Washers are crucial fastening components that help distribute load, protect surfaces from damage, and boost the strength of bolted joints. Crafted from high-quality stainless steel, these washers are known for their impressive resistance to corrosion, wear, and chemicals, making them perfect for both indoor and outdoor use. Typically made from grades like 304, 316, and 410, stainless steel washers are prized for their durability and strength, especially in tough environments. You’ll find them commonly used in construction, marine, automotive, food processing, and industrial equipment where reliability and longevity are a must.
The makeup of stainless steel washers varies depending on the grade. For instance, Grade 304 has around 18% chromium and 8% nickel, giving it a solid mix of strength and corrosion resistance. Meanwhile, Grade 316 includes an extra 2–3% molybdenum, which enhances its resistance to chlorides and marine conditions. These washers boast mechanical properties like tensile strengths between 500 and 860 MPa, excellent ductility, and the ability to perform well in both high and low temperatures. These characteristics ensure that stainless steel washers can handle mechanical stress, vibrations, and environmental challenges effectively.
| 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 |
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Stainless steel washers are widely used in industry because of their durability and corrosion resistance. The necessary weight is distributed during construction, and surfaces are not damaged. Vehicle operations rely on them to ensure secure and safe parking. The aerospace industry uses washing machines to withstand extreme conditions. Corrosion resistants are important in the marine environment. In addition, they are employed in the food processing and pharmaceutical industries for their sanitary properties. Stainless steel washers are versatile, providing reliability and efficiency in various applications.
You’ll find Stainless Steel Washers in a variety of applications, including structural assemblies, pipelines, pressure systems, machinery, and electrical equipment. In marine and coastal settings, 316 stainless steel washers are often the go-to choice due to their outstanding resistance to saltwater. In industries like food, pharmaceuticals, and chemical processing, their hygienic and non-reactive qualities make them ideal for sanitary conditions. By ensuring even load distribution and safeguarding surfaces from fastener damage, stainless steel washers play a vital role in extending the life and reliability of assemblies across many demanding sectors.
Bilal Fasteners is a leading manufacturer and supplier of high-quality fasteners in Indonesia, Jakarta, with over 8 years of experience serving global industries.
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