S-91128A140 1.062" ID Square Washers
Square 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 load distribution with 2" square design for maximum surface contact and stability
- Enhanced corrosion resistance through black-oxide steel construction for extended service life
- Precision dimensional accuracy with 1.062" ID ensuring perfect fit for 1" screw applications
- Exceptional mechanical strength with Rockwell 15N80 hardness rating for heavy-duty applications
- Reliable industrial compliance meeting RoHS 3 and REACH standards for safe usage
- Optimized thickness range (0.235-0.265") providing consistent performance under compression
- Inch system compatibility for seamless integration with North American industrial equipment
Professional Applications & Engineering Value
These black-oxide steel square washers deliver critical engineering solutions where standard round washers fall short. The square configuration provides four times the edge contact of round equivalents, preventing rotation and distributing loads across wider surface areas in structural steel connections, heavy machinery assembly, and construction applications. The Rockwell 15N80 hardness rating ensures the washer maintains dimensional integrity under extreme clamping forces, while the black-oxide surface treatment creates a protective barrier against rust and corrosion in harsh industrial environments. Engineered specifically for 1" screw size applications, these precision washers eliminate play and vibration issues in high-stress assemblies, making them ideal for bolted connections requiring maximum stability and longevity.
Specification Summary & Compliance
Manufactured to exacting dimensional standards with 1.062" inner diameter and 2" width in square configuration. The thickness tolerance of 0.235-0.265" ensures consistent performance across production batches. Full compliance with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations as of January 17, 2023, covering 233 SVHC substances. Manufactured from high-grade steel with Rockwell 15N80 hardness specification for reliable mechanical performance in industrial fastener systems.
