S-98125A033 0.531" ID x 1.125" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional load distribution from precise 1.125" OD and 0.531" ID dimensions, preventing surface damage
• Enhanced durability with Rockwell B83 hardness rating, maintaining structural integrity under pressure
• Perfect fit for 1/2" screws with controlled 0.168-0.193" thickness, ensuring secure fastening
• Full regulatory compliance with RoHS 3 and REACH standards, meeting global environmental requirements
• Reliable performance in inch measurement system, compatible with standard industrial equipment
• Long service life thanks to stainless steel's resistance to rust and degradation

Professional Applications & Engineering Value

These 18-8 stainless steel flat washers deliver critical engineering value in demanding applications where corrosion resistance and mechanical strength are paramount. The inch series dimensions (0.531" ID × 1.125" OD) provide optimal load distribution, preventing fastener loosening and surface indentation in heavy machinery, structural assemblies, and marine equipment. The Rockwell B83 hardness ensures the washers maintain their form under sustained vibration and thermal cycling, while the stainless steel material eliminates rust concerns in humid or chemical-exposed environments. These industrial flat washers solve common failure points in 1/2" screw applications by providing consistent thickness (0.168-0.193") for uniform clamping force across automotive, construction, and manufacturing sectors.

Specification Summary & Compliance

This heavy-duty flat washer features precision inch dimensions with 0.531" internal diameter, 1.125" outer diameter, and controlled thickness range of 0.168-0.193" specifically engineered for 1/2" screw applications. Manufactured from 18-8 stainless steel with Rockwell B83 hardness for consistent mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets with strict chemical substance restrictions.