S-91201A031 0.406" ID x 0.875" 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
- Optimal Load Distribution with 0.875" outer diameter to prevent surface damage and extend joint life
- Precise 3/8" Screw Compatibility through 0.406" inner diameter for secure, vibration-resistant fastening
- Enhanced Durability from Rockwell B84 hardness rating, resisting deformation under heavy loads
- Consistent Performance with 0.120-0.130" thickness range ensuring reliable spacing and tension
- Regulatory Compliance meeting RoHS 3 and REACH standards for safe industrial use
- Corrosion-Resistant Steel Construction providing long-term reliability in demanding environments
- Heavy-Duty Capability suitable for high-stress applications requiring mechanical precision
Professional Applications & Engineering Value
This steel flat washer delivers critical engineering value by solving common industrial fastening challenges. The Rockwell B84 hardness ensures the washer maintains its structural integrity under sustained pressure, preventing failure in heavy-duty applications like machinery assembly, structural steel connections, and industrial equipment maintenance. The precise 0.406" ID provides exact compatibility with 3/8" screws, eliminating play and reducing vibration-induced loosening. Meanwhile, the 0.875" OD creates an optimal bearing surface that distributes clamp load effectively, protecting soft materials from damage. Manufactured from quality steel and compliant with major regulatory standards, this flat washer offers reliable performance in manufacturing, construction, and mechanical systems where precision and durability are paramount.
Specification Summary & Compliance
This flat washer features inch system dimensions with 0.406" inner diameter, 0.875" outer diameter, and 0.120-0.130" thickness range for precise fit with 3/8" screws. Manufactured to industrial standards with Rockwell B84 hardness for consistent performance. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) standards as of 01/17/2023, ensuring regulatory adherence for industrial distribution and use.
