S-93852A184 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and black-oxide coating, ideal for harsh industrial environments
- Superior load distribution thanks to USS flat washer design with 1.5" ID and 3.25" OD, preventing surface damage and loosening
- Enhanced durability and wear resistance from Rockwell B68 hardness, ensuring long service life under heavy loads
- Reliable dimensional accuracy compliant with ASME B18.21.1 standards for consistent fit and performance
- Safe for sensitive applications with full RoHS 3 and REACH compliance, meeting global environmental regulations
- Optimized for 1 3/8" screw sizes in inch measurement systems, providing precise compatibility in mechanical assemblies
- Reduced maintenance needs due to stainless steel's inherent strength and oxidation resistance, lowering long-term costs
Professional Applications & Engineering Value
These USS flat washers in black-oxide 18-8 stainless steel address critical engineering challenges in heavy machinery, construction, and marine equipment. The 1.5" ID and 3.25" OD dimensions ensure optimal load spreading, minimizing stress concentrations on fastened surfaces and preventing joint failure. With Rockwell B68 hardness, they withstand high vibration and cyclic loading without deformation, while the black-oxide coating enhances corrosion protection in humid or chemical-exposed environments. Ideal for industrial washers applications requiring ASME B18.21.1 compliance, they provide reliable performance in structural assemblies, pipeline flanges, and equipment mounting, reducing downtime and replacement frequency.
Specification Summary & Compliance
This washer meets ASME B18.21.1 specifications for dimensional accuracy and performance in inch measurement systems. It is manufactured from 18-8 stainless steel with a thickness range of 0.153-0.213" and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial suitability.
