S-91090A111 0.344" ID x 1.25" 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
- Enhanced corrosion resistance through zinc plating for longer service life in humid or outdoor environments
- Precise dimensional fit with 0.344" ID and 1.25" OD ensuring proper alignment and load distribution
- Consistent thickness control (0.042-0.051") for uniform pressure distribution across mating surfaces
- Compatibility with 5/16" fasteners for reliable assembly in industrial applications
- Environmental compliance assurance meeting RoHS 3 and REACH standards for global supply chain requirements
- Durable steel construction providing reliable performance under mechanical stress
- Versatile application range suitable for various industrial assemblies requiring flat washer solutions
Professional Applications & Engineering Value
These zinc-plated steel flat washers deliver critical engineering value by preventing fastener loosening and surface damage in demanding industrial applications. The zinc plating creates a protective barrier against corrosion, significantly extending component life in environments exposed to moisture or chemicals. With precise inch system dimensions (0.344" ID x 1.25" OD), these 5/16" flat washers ensure perfect fitment with standard fasteners, distributing clamp load evenly to prevent joint failure. The controlled thickness variation maintains consistent performance across production runs, while RoHS and REACH compliance makes them suitable for regulated industries worldwide, from machinery manufacturing to electrical enclosures.
Specification Summary & Compliance
This flat washer features inch system dimensions with 0.344" inner diameter, 1.25" outer diameter, and thickness ranging 0.042-0.051" specifically designed for 5/16" screw size applications. Manufactured from zinc-plated steel, the product maintains dimensional accuracy suitable for standard industrial use. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental regulatory adherence for global manufacturing and distribution.
