S-98370A111 0.25" ID x 1.5" 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, ensuring long-term reliability in harsh environments.
- Exceptional load distribution with a 1.5" outer diameter, protecting surfaces and preventing fastener embedment.
- Optimized fit for No. 12 screws with a precise 0.25" inner diameter, ensuring secure and stable assemblies.
- Enhanced mechanical strength with Rockwell B68 hardness, providing excellent resistance to deformation under pressure.
- Consistent performance due to a controlled thickness range (0.110-0.140"), guaranteeing uniform clamping force.
- Compliance with global environmental standards including RoHS 3 and REACH, making them safe for regulated industries.
- Durability in demanding applications thanks to the material's innate resistance to rust and staining.
Professional Applications & Engineering Value
This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as galvanic corrosion, surface damage, and fastener loosening. Its corrosion-resistant properties make it ideal for outdoor equipment, marine hardware, chemical processing plants, and food-grade machinery where moisture and aggressive substances are present. The flat washer design ensures even pressure distribution across a wide area, which is critical when used with No. 12 screw sizes in assemblies requiring vibration resistance and structural integrity. By utilizing a Rockwell B68 hardness material, it maintains dimensional stability under heavy loads, reducing maintenance needs and extending the service life of your mechanical systems.
Specification Summary & Compliance
This washer conforms to inch system measurements with an ID of 0.25", OD of 1.5", and thickness between 0.110-0.140". It is manufactured to standard flat washer dimensional and tolerance expectations for general use. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant (as of 06/14/2023, 235 SVHC), ensuring it meets stringent environmental and safety regulations for hazardous substances.
