S-90377A143 0.203" ID x 0.562" OD Oversized Washers
Oversized Washers
Image may differ from product. See technical specification for details.
Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional corrosion resistance from 18-8 stainless steel with black-oxide coating, ideal for harsh industrial environments
- Superior load distribution with 0.562" outer diameter protecting surfaces from damage under high stress
- Precise No. 10 screw compatibility with 0.203" inner diameter ensuring secure fastening without slippage
- Enhanced durability with Rockwell B68 hardness maintaining structural integrity under repeated use
- Reliable thickness tolerance (0.060-0.090") providing consistent performance in assembly applications
- Full regulatory compliance meeting RoHS 3 and REACH standards for safe global industrial use
- Long-term chemical resistance preventing degradation from oils, solvents, and moisture exposure
Professional Applications & Engineering Value
This Black-Oxide 18-8 stainless steel flat washer delivers critical engineering value in applications where corrosion resistance and chemical stability are paramount. The combination of 18-8 stainless steel material with black-oxide surface treatment creates a protective barrier against oxidation, making it ideal for industrial equipment, marine components, and chemical processing facilities. The precise No. 10 screw size compatibility ensures proper load distribution while preventing galvanic corrosion when paired with compatible fasteners. With consistent thickness tolerances and Rockwell B68 hardness, these flat washers maintain dimensional stability under vibration and thermal cycling, solving common failure points in heavy-duty assemblies.
Specification Summary & Compliance
This inch-system flat washer features precise dimensions: 0.203" ID × 0.562" OD with thickness tolerance of 0.060-0.090". Manufactured from 18-8 stainless steel with black-oxide finish and hardened to Rockwell B68. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted industrial use across global markets.
