S-91083A011 0.219" ID x 0.5" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution - The 0.5" outer diameter provides a wider bearing surface, reducing surface pressure and preventing damage to assembled materials.
• Precise Fit for No. 10 Screws - 0.219" inner diameter ensures a secure and accurate fit, minimizing loosening and maintaining assembly integrity.
• Durable Steel Construction - Manufactured from robust steel for reliable performance and resistance to deformation under standard industrial loads.
• Standardized Dimensions - Compliant with ASME B18.21.1 specifications, guaranteeing interchangeability and consistent quality in replacement or new projects.
• Regulatory Compliance Assurance - Meets RoHS 3 and REACH environmental directives, making them suitable for regulated industries and global supply chains.
• Versatile Thickness Range - 0.036" to 0.065" thickness offers flexibility for various gapping and spacing needs in mechanical assemblies.
• SAE Standard Reliability - Conforms to SAE standards, ensuring compatibility and performance predictability in inch-based mechanical systems.

Professional Applications & Engineering Value

These SAE flat washers are engineered to address common industrial challenges such as surface damage, fastener loosening, and load concentration. The steel material provides essential strength to withstand vibrational forces and bolt pre-loads, preventing embedding into softer materials. With precise dimensions including the 0.219" ID for No. 10 screws and 0.5" OD, they effectively distribute clamping force across a larger area, protecting components from crushing or cracking. This makes them ideal for industrial machinery, automotive assemblies, and electrical enclosures where reliable load spreading and ASME B18.21.1 compliance are critical for long-term performance and safety.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.219", outer diameter of 0.5", and thickness ranging from 0.036" to 0.065", designed specifically for No. 10 screw sizes. Manufactured in accordance with ASME B18.21.1 standards, ensuring dimensional accuracy and mechanical suitability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety requirements for industrial components.