S-98970A315 1.875" ID x 4" OD ASME B18.21.1 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
- Superior corrosion resistance with hot-dipped galvanized steel coating, extending service life in harsh industrial environments.
- Optimal load distribution due to the 4" outer diameter, minimizing surface pressure and preventing material damage.
- Precise fit for 1 3/4" screws with a 1.875" inner diameter, ensuring secure fastening and reducing assembly errors.
- Enhanced durability from a thickness range of 0.153-0.213", providing reliable performance under heavy loads.
- Compliance with ASME B18.21.1 standards, guaranteeing consistent quality and interchangeability in industrial applications.
- RoHS 3 compliance for environmentally safe use, meeting global regulatory requirements without compromising performance.
- Versatile inch system design for seamless integration with existing USS-standard equipment and components.
Professional Applications & Engineering Value
This USS flat washer is engineered from hot-dipped galvanized steel to address common industrial challenges like corrosion and fastener failure. The robust 1.875" ID and 4" OD dimensions ensure even load spreading, which is critical in heavy-duty applications such as structural steel connections, machinery assembly, and construction projects. By meeting ASME B18.21.1 specifications, it provides reliable performance in high-stress environments, reducing maintenance needs and downtime. The galvanized surface treatment offers long-term protection against rust, making it ideal for outdoor or humid conditions, while its compatibility with 1 3/4" screws streamlines procurement and installation processes for engineers and procurement specialists.
Specification Summary & Compliance
This washer features an inner diameter of 1.875", outer diameter of 4", and thickness ranging from 0.153" to 0.213", designed for use with 1 3/4" screws in inch measurement systems. It conforms to ASME B18.21.1 standards for dimensional accuracy and performance, ensuring reliable fit and function. The product is RoHS 3 (2015/863/EU) compliant, adhering to environmental regulations for hazardous substance restrictions.
