S-90377A159 0.266" 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 Black-Oxide 18-8 Stainless Steel, ideal for harsh environments and extending component lifespan.
- Excellent load distribution with a 1.5" outer diameter, preventing surface damage and maintaining joint integrity under pressure.
- Precise fit for 1/4" fasteners thanks to the 0.266" inner diameter, ensuring secure and stable assembly.
- Durable and reliable performance with a thickness range of 0.050-0.080", providing consistent spacing and vibration resistance.
- Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for safe use in regulated industries.
- Broad industrial applicability due to inch system sizing, making them compatible with standard North American equipment and designs.
Professional Applications & Engineering Value
These Black-Oxide 18-8 Stainless Steel flat washers are engineered to address common industrial challenges such as galvanic corrosion, surface abrasion, and environmental degradation. The black-oxide surface treatment enhances the natural corrosion resistance of 18-8 stainless steel, making these flat washers ideal for outdoor machinery, marine applications, chemical processing equipment, and assembly lines exposed to moisture or chemicals. Their precise dimensions, including the 1.5" OD and 0.266" ID, ensure optimal load distribution, reducing stress concentrations and preventing fastener loosening in high-vibration environments. This combination of material and design delivers long-term reliability, minimizing maintenance needs and downtime in demanding industrial applications.
Specification Summary & Compliance
This 1/4" flat washer is manufactured to standard inch system dimensions with an inner diameter of 0.266", outer diameter of 1.5", and thickness ranging from 0.050" to 0.080". It is made from 18-8 Stainless Steel with a black-oxide finish for enhanced durability. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to current environmental and safety regulations for hazardous substances.
