S-91102A005 0.12" ID x 0.209" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance due to the split lock design, preventing fastener loosening in dynamic industrial environments.
• Enhanced corrosion protection with zinc-plated steel construction, ensuring long-term durability in harsh conditions.
• Precise fit for No. 4 screws with a 0.12" inner diameter, providing secure and reliable fastening without slippage.
• High hardness rating of Rockwell C38 for excellent wear resistance and repeated use without deformation.
• Compliance with ASME B18.21.1 standards, guaranteeing consistent quality and performance in mechanical assemblies.
• RoHS 3 and REACH compliant, meeting strict environmental regulations for safe use in global markets.
• Compact dimensions (0.209" OD, 0.025" thickness) for easy integration into tight spaces without compromising strength.

Professional Applications & Engineering Value

This split lock washer is engineered to address common issues like vibration-induced loosening in machinery and equipment. Made from zinc-plated steel, it offers reliable corrosion resistance, making it ideal for industrial applications such as automotive assemblies, electrical enclosures, and heavy-duty manufacturing. The standard split lock washer type and precise inch measurements ensure compatibility with No. 4 screw sizes, providing a cost-effective solution for maintaining bolt tension under stress. By reducing maintenance needs and enhancing assembly integrity, this washer delivers long-term engineering value in demanding environments.

Specification Summary & Compliance

This washer features a 0.12" ID, 0.209" OD, and 0.025" thickness with a standard split lock design, manufactured to ASME B18.21.1 specifications for dimensional accuracy and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for international industrial use.