S-91101A005 0.12" ID x 0.209" OD ASME B18.21.1 Split Lock Washers
Split Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance from the split lock design, ensuring fasteners stay securely tightened in high-stress environments.
- Exceptional durability with Rockwell C38 hardness, providing long-lasting performance under repeated loads and mechanical stress.
- Precise fit for No. 4 screws with a 0.12" inner diameter and 0.209" outer diameter, offering reliable installation and alignment.
- Compliance with ASME B18.21.1 standards, guaranteeing consistent quality and interchangeability in industrial applications.
- Environmental and safety compliance with RoHS 3 and REACH regulations, ensuring safe use in various industries.
- Robust steel construction for high tensile strength and resistance to corrosion in demanding conditions.
- Easy identification and sourcing as a standard split lock washer type, streamlining procurement and inventory management.
Professional Applications & Engineering Value
This steel split lock washer is engineered to address common challenges in machinery and equipment assembly, where vibration-induced loosening can lead to operational failures. The split lock design applies continuous spring tension, maintaining bolt preload and preventing back-off in dynamic systems like automotive engines, industrial motors, and heavy-duty fastening applications. Made from high-strength steel and hardened to Rockwell C38, it withstands cyclic stresses and harsh environments, reducing maintenance needs. With precise dimensions (0.12" ID and 0.209" OD) for No. 4 screws, it ensures easy integration into inch-system designs, while compliance with ASME B18.21.1 standards assures reliability in critical engineering projects.
Specification Summary & Compliance
This washer features an inner diameter of 0.12", outer diameter of 0.209", and thickness of 0.025", designed for No. 4 screw sizes with standard split lock washer type. It adheres to ASME B18.21.1 specifications for dimensional accuracy and performance, ensuring consistent fit and function. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.
