S-90481A281 0.125" ID x 0.625" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from zinc plating, extending service life in humid or industrial environments
• Precise dimensional fit with 0.125" ID and 0.625" OD, ensuring secure placement under No. 4 screw heads
• Consistent load distribution due to flat design and 0.020-0.040" thickness, reducing surface damage and loosening
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting global environmental and safety mandates
• Durable steel construction providing reliable mechanical strength for repeated assembly and disassembly cycles
• Broad industrial compatibility as an inch-system component, suitable for machinery, electronics, and general hardware applications

Professional Applications & Engineering Value

These zinc-plated steel flat washers address critical challenges in B2B assembly lines, where corrosion resistance and consistent performance are paramount. The zinc plating forms a protective barrier against oxidation and chemical exposure, ideal for outdoor equipment, electrical enclosures, and automotive subsystems. With a precise 0.125" ID and 0.625" OD, they prevent over-compression and distribute clamp load evenly under No. 4 screw fasteners, minimizing stress concentration on soft materials. This design reduces maintenance frequency and enhances joint integrity in high-vibration settings, from conveyor systems to control panels, ensuring long-term operational reliability.

Specification Summary & Compliance

This flat washer adheres to inch-system dimensional standards with an inner diameter of 0.125", outer diameter of 0.625", and thickness range of 0.020-0.040". Manufactured from zinc-plated steel, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. The product supports quality-driven procurement by meeting industry specifications for material consistency and environmental safety.