S-90452A106 Washers for Square-Neck Bolts

Key Features & Benefits at a Glance

• Enhanced Load Distribution with 0.9" outer diameter for superior surface coverage and reduced material stress
• Secure Anti-Rotation Locking thanks to the square hole design, preventing washer spin during screw tightening
• Superior Corrosion Resistance from zinc-plated steel construction, extending service life in harsh environments
• Precision Fit for 3/8" Fasteners with 0.392" inside width ensuring optimal screw alignment and assembly stability
• Heavy-Duty Performance with 0.085-0.095" thickness providing reliable strength for demanding industrial applications
• Global Compliance Ready meeting RoHS 3 and REACH standards for international supply chain integration
• Standard Inch System Compatibility ensuring seamless integration with existing North American equipment and specifications

Professional Applications & Engineering Value

This zinc-plated steel square hole washer delivers critical engineering solutions where standard round washers fail. The square hole configuration mechanically locks against bolt heads and nuts, eliminating rotational movement that compromises joint integrity in vibrating machinery, construction frameworks, and heavy equipment assemblies. The 0.9" OD provides substantial bearing surface to prevent embedding in soft materials and distribute clamping forces evenly. Manufactured from zinc-plated steel, these industrial washers offer exceptional corrosion protection for outdoor applications, manufacturing facilities, and infrastructure projects where environmental exposure is a concern. The precise 3/8" screw compatibility ensures rapid installation while maintaining the structural reliability required for heavy-duty fastening systems.

Specification Summary & Compliance

This square hole washer features inch system dimensions with 0.9" OD, 0.392" inside width, and 0.085-0.095" thickness range. Manufactured to standard industrial specifications for 3/8" screw size applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to global environmental and safety standards for industrial components.