S-93012A111 0.281" ID x 0.625" OD ASME B18.21.1 SAE Washers
SAE 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 humid or outdoor environments
- Precise dimensional fit with 0.281" ID and 0.625" OD ensuring optimal load distribution for 1/4" fasteners
- Enhanced durability from Rockwell B72 hardness, maintaining structural integrity under repeated stress
- Reliable compliance with ASME B18.21.1 standards for consistent performance in industrial applications
- Environmental safety through RoHS 3 compliance, meeting strict regulatory requirements
- Versatile thickness range (0.051-0.080") accommodating various assembly tolerances and compression needs
- Reduced maintenance costs by preventing fastener loosening and surface damage in high-vibration settings
Professional Applications & Engineering Value
These SAE flat washers deliver critical engineering solutions where corrosion resistance and load distribution are paramount. The hot-dipped galvanized steel construction provides a thick, bonded zinc layer that withstands moisture, chemicals, and UV exposure—ideal for outdoor machinery, marine equipment, and industrial frameworks. With precise 0.281" ID and 0.625" OD dimensions, they eliminate bolt slippage and evenly disperse clamping force on 1/4" screw connections. This prevents joint failure in high-vibration applications like automotive assemblies, construction scaffolding, and electrical enclosures, while the ASME B18.21.1 standardization ensures interchangeability and quality consistency across maintenance operations.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 dimensional and mechanical specifications, these flat washers maintain tight tolerances for inner diameter (0.281"), outer diameter (0.625"), and thickness (0.051-0.080"). The Rockwell B72 hardness guarantees consistent performance under load, while the hot-dipped galvanized finish exceeds typical corrosion protection requirements. Full compliance with RoHS 3 (2015/863/EU) ensures adherence to hazardous substance restrictions, making them suitable for global supply chains and environmentally conscious projects.
