S-93286A045 0.391" ID x 0.625" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-grade aluminum construction, ideal for humid or chemically aggressive environments.
• Excellent load distribution with a precise 0.625" OD and 0.391" ID, preventing surface damage and loosening under 3/8" screw loads.
• Enhanced durability with a Brinell 95 hardness rating, ensuring long service life and reduced replacement frequency.
• Reliable dimensional stability through controlled thickness (0.059-0.069"), maintaining consistent performance in assembly.
• Global compliance assurance with RoHS 3 and REACH standards, meeting stringent environmental and safety regulations.
• Lightweight yet strong aluminum material, reducing overall weight without compromising on mechanical strength.
• Broad compatibility with inch-system fasteners, simplifying sourcing for North American and international industrial applications.

Professional Applications & Engineering Value

This aluminum flat washer is engineered to address common industrial challenges such as galvanic corrosion, weight reduction, and regulatory compliance. Its aluminum composition provides inherent corrosion resistance, making it suitable for outdoor equipment, marine hardware, and electronics where moisture exposure is a concern. The precise 0.625" OD and 0.391" ID ensure optimal load distribution for 3/8" screw fastenings, reducing stress concentrations and preventing joint failure in machinery, automotive, and structural assemblies. Combined with Brinell 95 hardness, it offers reliable performance in vibration-prone applications, while RoHS and REACH compliance supports sustainable manufacturing practices without sacrificing durability.

Specification Summary & Compliance

This washer adheres to inch-system measurement standards with an inner diameter of 0.391", outer diameter of 0.625", and thickness ranging from 0.059" to 0.069", designed specifically for 3/8" screw sizes. It meets industry manufacturing tolerances for flat washers and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for global industrial use.