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What are ISO 7093 A2 Stainless Steel HV 200 Large Outer Diameter Washers?
ISO 7093 washers are metric flat washers with a large outside diameter, designed to distribute the load of a bolt or nut over a substantially greater surface area than a standard flat washer. Their oversized design is particularly useful for thin, soft, flexible, or easily damaged materials, as well as oversized and slotted holes. These washers are manufactured to the HV 200 hardness class, making them a specialty high-hardness stainless steel washer.
What does HV 200 mean for ISO 7093 Washers?
The HV 200 designation refers to the washer's Vickers hardness, with a minimum hardness of 200 HV. This higher hardness provides increased resistance to indentation and deformation under the compressive forces generated by a tightened fastener. The 200 HV specification helps the washer maintain a stable bearing surface, particularly when used with higher-strength bolts and in heavily loaded assemblies.
The HV 200 classification is an important distinction from many traditional DIN 9021 oversized washers, which are commonly encountered in softer hardness classes. ISO 7093 provides the updated international specification, with defined mechanical requirements for the washer. Choosing an ISO 7093 HV 200 washer therefore provides not only the benefit of the large outside diameter, but also a harder, more deformation-resistant bearing surface.
What material are ISO 7093 A2 Stainless Steel HV 200 Washers made from?
These ISO 7093 washers are manufactured from A2 stainless steel and meet the 200 HV hardness class. A2 stainless provides excellent general corrosion resistance against moisture, humidity, and oxidation, while the HV 200 hardness provides increased resistance to deformation beneath the fastener.
This combination of A2 stainless steel, HV 200 hardness, and large outside diameter makes these washers a premium choice when both corrosion resistance and increased load distribution are required.
Where are ISO 7093 A2 Stainless Steel HV 200 Washers commonly used?
ISO 7093 A2 stainless HV 200 oversized washers are commonly used in automotive, machinery, sheet metal fabrication, trailers, agricultural equipment, electrical enclosures, HVAC, appliances, construction equipment, and general mechanical assemblies. They are particularly useful for thin sheet metal, panels, plastics, fiberglass, composites, oversized holes, and slotted holes where the combination of a large bearing surface and a harder 200 HV washer is beneficial.
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