S-91081A171 0.25" ID x 0.562" OD USS Washers
USS 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 with black-oxide steel surface treatment for longer service life in demanding environments
- Precise USS dimensional standards ensure perfect fit and uniform load distribution for No. 10 screw applications
- Optimal thickness range (0.036-0.065") provides reliable spacing and vibration dampening capabilities
- Robust steel construction delivers consistent performance under mechanical stress and repeated use
- Full regulatory compliance with RoHS 3 and REACH standards for global market acceptance
- Standard inch sizing (0.25" ID/0.562" OD) ensures compatibility with existing industrial equipment and fastening systems
- Versatile flat washer design suitable for both light and heavy-duty assembly applications across multiple industries
Professional Applications & Engineering Value
These black-oxide steel flat washers provide essential engineering solutions for industrial assembly challenges. The USS designation guarantees dimensional accuracy that prevents loosening under vibration and maintains proper clamp load distribution. The black-oxide surface treatment offers superior corrosion protection compared to plain steel, extending component life in humid or chemically aggressive environments. Engineered specifically for No. 10 screw sizes with precise 0.25" ID and 0.562" OD dimensions, these industrial washers effectively distribute bearing pressure, prevent surface damage, and compensate for minor misalignments in machinery, automotive, and construction applications where reliability is paramount.
Specification Summary & Compliance
Manufactured to USS flat washer standards with inch system measurements: 0.25" internal diameter, 0.562" outer diameter, and thickness ranging 0.036-0.065". These washers are designed specifically for No. 10 screw sizes and feature black-oxide steel construction. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance for industrial and commercial applications.
