S-90377A125 0.203" ID x 0.75" OD Oversized Washers
Oversized Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coated 18-8 stainless steel construction, ideal for harsh industrial environments
- Enhanced load distribution through precise 0.203" ID and 0.75" OD dimensions, minimizing surface damage and loosening
- Consistent performance ensured by Rockwell B68 hardness rating for reliable mechanical strength under pressure
- Optimal thickness tolerance (0.030-0.050") provides secure fitting and vibration resistance in No. 10 screw applications
- Environmental compliance with RoHS 3 and REACH standards, meeting strict safety regulations for industrial use
- Durable surface protection from black-oxide finish, reducing wear and extending service life in demanding conditions
Professional Applications & Engineering Value
These black-oxide 18-8 stainless steel flat washers deliver critical engineering value by addressing common industrial challenges such as galvanic corrosion, fastener loosening, and material degradation. The black-oxide coating on the 18-8 stainless steel base provides an additional barrier against moisture, chemicals, and oxidation, making these flat washers suitable for outdoor equipment, marine hardware, and chemical processing installations. With precise 0.203" ID and 0.75" OD dimensions, they ensure uniform pressure distribution, preventing joint failure and reducing maintenance needs in No. 10 screw assemblies. Their compliance with RoHS 3 and REACH standards further supports sustainable manufacturing practices without compromising on corrosion resistance or mechanical integrity.
Specification Summary & Compliance
This flat washer is manufactured to exact inch system specifications with an inner diameter of 0.203", outer diameter of 0.75", and thickness range of 0.030-0.050", designed for No. 10 screw sizes. It maintains a hardness of Rockwell B68 for consistent performance and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications.
