S-91081A033 0.562" ID x 1.375" 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
- Optimal load distribution with 1.375" outer diameter to prevent surface damage and material embedment
- Precise 0.562" inner diameter ensures perfect fit and alignment with 1/2" fasteners
- Industrial-grade steel construction provides reliable strength and durability for heavy-duty applications
- ASME B18.21.1 compliance guarantees consistent dimensional accuracy and mechanical performance
- RoHS 3 and REACH compliant for environmentally responsible sourcing and regulatory compliance
- Versatile thickness range (0.086-0.132") accommodates various assembly requirements and gap-filling needs
- USS designation compatibility ensures seamless integration with existing inch-system assemblies
Professional Applications & Engineering Value
These USS flat washers deliver critical engineering solutions for industrial applications where load distribution and surface protection are paramount. The steel construction provides excellent compressive strength, preventing fastener loosening under vibration while protecting sensitive surfaces from damage. Engineered specifically for 1/2" screw applications, these washers maintain proper clamp load distribution in machinery, structural steel connections, and heavy equipment assemblies. The ASME B18.21.1 standard compliance ensures dimensional consistency across batches, reducing assembly errors and improving production efficiency in manufacturing, construction, and maintenance operations where reliable inch system washers are essential for long-term performance.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 standards with precise dimensional specifications: 0.562" inner diameter, 1.375" outer diameter, and thickness ranging from 0.086" to 0.132". These steel flat washers are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across various industrial sectors. The USS designation confirms adherence to established inch-system specifications for reliable performance in standardized assembly applications.
