S-91434A118 0.406" ID x 0.813" OD ASME B18.21.1 SAE Washers
SAE 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
- Exceptional corrosion resistance with black protective coating for extended service life in harsh environments
- Superior load distribution with precise 0.406" ID and 0.813" OD dimensions for optimal 3/8" screw compatibility
- Maximum durability achieved through Rockwell C38 hardness rating for heavy-duty applications
- Grade 8 strength classification ensures reliable performance under high-stress conditions
- Industry-standard compliance with ASME B18.21.1 specifications for guaranteed dimensional accuracy
- Environmental responsibility through RoHS 3 and REACH compliance for safe industrial use
- Consistent thickness (0.055-0.065") provides uniform clamping force and vibration resistance
Professional Applications & Engineering Value
This Grade 8 flat washer delivers critical engineering solutions for industrial applications where corrosion resistance and structural integrity are paramount. The black corrosion-resistant coated steel construction prevents rust formation in demanding environments, while the Rockwell C38 hardness ensures the washer maintains its shape under extreme pressure. Engineered specifically for 3/8" screw applications, this SAE washer provides optimal load distribution across joint surfaces, preventing material deformation and maintaining bolt preload in heavy machinery, construction equipment, and automotive assemblies. The precise dimensional control according to ASME B18.21.1 standards guarantees consistent performance across your fastener systems, reducing maintenance costs and preventing premature failure in critical connections.
Specification Summary & Compliance
Manufactured to exacting ASME B18.21.1 dimensional standards with inner diameter of 0.406", outer diameter of 0.813", and thickness range of 0.055-0.065". Constructed from black corrosion-resistant coated steel with Rockwell C38 hardness and Grade 8 strength classification. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global industrial applications.
