S-90313A508 0.25" ID x 0.75" OD Oversized Washers
Oversized Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- Exceptional load distribution with a 0.75" outer diameter, minimizing surface stress and preventing material damage.
- Precise fit and secure fastening with a 0.25" inner diameter designed specifically for No. 12 screws.
- Enhanced durability and deformation resistance due to Rockwell B68 hardness, maintaining performance under pressure.
- Consistent thickness control (0.060-0.090") ensures uniform clamping force and reliable assembly.
- Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.
- Broad industrial compatibility with inch measurement system, fitting standard equipment and replacement needs.
Professional Applications & Engineering Value
This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as fastener loosening, surface damage, and corrosion-induced failure. Its corrosion-resistant material ensures longevity in moist or chemical-exposed environments, from marine equipment to food processing machinery. The precise 0.25" ID and 0.75" OD provide optimal load distribution, protecting sensitive surfaces and maintaining joint integrity under vibration or thermal cycling. With a Rockwell B68 hardness, it resists wear and deformation, making it a reliable choice for heavy-duty applications in construction, automotive, and manufacturing where precision washers are critical for safety and performance.
Specification Summary & Compliance
This flat washer adheres to standard inch dimensions with an inner diameter of 0.25", outer diameter of 0.75", and thickness range of 0.060-0.090". It is manufactured for use with No. 12 screw sizes and meets industry standards for fit and function. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial supply chains.
