S-97449A103 Steel Pronged Lock Washers for Square-Neck Carriage Bolts
Steel Pronged Lock Washers for Square-Neck Carriage Bolts
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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
- Enhanced corrosion resistance with zinc-plated steel construction, ideal for humid or outdoor environments
- Superior load distribution from the 1.1" outer diameter, reducing surface pressure and material fatigue
- Secure anti-rotation locking due to the square hole design, preventing loosening under vibration
- Exceptional durability with Rockwell B47 hardness, maintaining integrity under heavy loads
- Precise compatibility for 3/8" screws, ensuring easy installation and reliable performance
- Regulatory compliance with RoHS 3 and REACH standards, meeting global safety and environmental requirements
- Consistent thickness tolerance (0.042-0.051"), providing uniform spacing and reliable fastening
Professional Applications & Engineering Value
This heavy-duty square hole washer is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in demanding environments. The zinc-plated steel material offers excellent protection against rust, extending service life in applications like construction, machinery assembly, and outdoor equipment. The square hole design ensures a tight fit with square-neck bolts, preventing rotation and maintaining clamp load under dynamic stresses. With a Rockwell B47 hardness, it withstands high-pressure conditions without deformation, making it a reliable choice for industrial washers in automotive, agricultural, and structural frameworks. Its compliance with RoHS and REACH standards further ensures safety and sustainability in global supply chains.
Specification Summary & Compliance
This washer features precise dimensions, including a 1.1" OD, 0.405" inside width, and thickness range of 0.042-0.051", designed for use with 3/8" screws in inch-based systems. It adheres to standard manufacturing tolerances and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety requirements for industrial applications.
