S-93852A145 1.5" ID x 3.25" 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 from 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
- Exceptional load distribution with a large 3.25" outer diameter, preventing surface damage and bolt head embedment.
- Precise fit and secure fastening ensured by the 1.5" inner diameter, perfectly matching 1 3/8" screw sizes.
- Enhanced durability and deformation resistance provided by the Rockwell B68 hardness rating.
- Guaranteed dimensional consistency and reliability through compliance with the ASME B18.21.1 standard.
- Safe for use in regulated industries with full compliance to RoHS 3 and REACH environmental directives.
- Robust construction for heavy-duty applications with a substantial thickness ranging from 0.153" to 0.213".
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this USS flat washer solves critical challenges in machinery assembly, structural steelwork, and heavy equipment. The 18-8 stainless steel material provides excellent corrosion resistance, eliminating failure points in moist or chemically aggressive environments. Its large 3.25" OD and sturdy build effectively distribute high clamp loads, preventing joint loosening and protecting softer surfaces from damage. Compliant with ASME B18.21.1, this washer ensures dimensional precision and reliable performance in heavy-duty bolted connections, making it an indispensable component for engineers prioritizing long-term structural integrity and maintenance reduction.
Specification Summary & Compliance
This washer conforms to the dimensional and mechanical requirements of the ASME B18.21.1 standard for USS flat washers. It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B68. Key dimensions include an Inner Diameter (ID) of 1.5", an Outer Diameter (OD) of 3.25", and a Thickness range of 0.153" - 0.213", designed for a screw size of 1 3/8". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.
