S-90313A107 0.281" ID x 1" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extending service life.
• Precise dimensional fit with 0.281" ID and 1" OD, ensuring reliable load distribution and secure fastening for 1/4" screws.
• Durable and reliable performance in industrial settings, thanks to the inherent strength and longevity of stainless steel.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe and responsible use in global supply chains.
• Versatile application across various machinery and equipment assemblies due to its standard inch system sizing.
• Enhanced assembly integrity by preventing loosening and surface damage under bolt heads and nuts.

Professional Applications & Engineering Value

This 1/4" flat washer is engineered from 18-8 stainless steel, providing exceptional corrosion resistance that is critical in demanding industrial and outdoor applications. Its precise inner diameter of 0.281" and outer diameter of 1" ensure a perfect fit for standard 1/4" screws, effectively distributing load and reducing stress concentrations. This helps prevent fastener failure and material deformation, common issues in mechanical assemblies. The flat design and robust material make it a go-to component for machinery, automotive, and construction projects, where reliability and longevity are paramount. By utilizing this inch system washer, engineers can achieve consistent, secure connections that withstand vibration and environmental exposure.

Specification Summary & Compliance

This flat washer features an ID of 0.281", OD of 1", and thickness ranging from 0.043" to 0.057", designed for use with 1/4" screw sizes in the inch measurement system. It is manufactured from 18-8 stainless steel and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial hardware.