S-91717A103 0.125" ID x 0.438" OD Clipped Washers

Key Features & Benefits at a Glance

• Secure Fastening with Clip Design: The 0.36" clipped width ensures the washer stays firmly in place during assembly, preventing rotation or misalignment for reliable No. 4 screw installations.
• Enhanced Durability & Longevity: Made from steel with a Rockwell B40 hardness, this washer resists deformation under load, maintaining structural integrity over time.
• Precision Fit for Optimal Performance: With an exact 0.125" ID and 0.438" OD, it provides a snug fit on No. 4 screws, distributing load evenly to prevent surface damage.
• Consistent Thickness for Uniform Pressure: The 0.036-0.045" thickness range ensures even pressure distribution, reducing the risk of loosening in high-vibration industrial environments.
• Compliance with Global Safety Standards: Meets RoHS 3 and REACH regulations, guaranteeing safe use in electronics and other sensitive applications without hazardous substances.
• Versatile Inch System Compatibility: Designed for inch-based systems, it integrates seamlessly with standard No. 4 screw setups, simplifying procurement and inventory management.
• Cost-Effective Maintenance Solution: The robust steel construction minimizes replacement needs, lowering long-term maintenance costs in demanding settings.

Professional Applications & Engineering Value

This steel clipped washer is engineered to address common industrial challenges, such as fastener loosening and material fatigue. Its clipped design locks securely onto No. 4 screws, making it ideal for applications in electronics assembly, automotive components, and machinery where vibration resistance is critical. The Rockwell B40 hardness ensures the washer withstands repeated stress without cracking, while the precise 0.125" ID and 0.438" OD dimensions provide a tight fit that prevents misalignment. By using RoHS and REACH compliant materials, it supports sustainable manufacturing practices, reducing environmental risks in sectors like aerospace and consumer goods. This combination of durability, precision, and regulatory adherence delivers reliable performance in high-stakes environments, enhancing overall system longevity.

Specification Summary & Compliance

This washer adheres to standard inch measurement tolerances, with an inner diameter of 0.125", outer diameter of 0.438", thickness ranging from 0.036" to 0.045", and a clipped width of 0.36". It is manufactured from steel with a Rockwell B40 hardness for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it meets stringent environmental and safety standards for industrial use.