S-5185N111 0.26" ID x 0.487" 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 prevents fastener loosening in high-stress applications
- Corrosion-resistant black-oxide steel construction ensures long-term durability in harsh environments
- Precision 0.26" ID design provides perfect fit for 1/4" screws without slippage
- Rockwell C38 hardness rating delivers exceptional mechanical strength and wear resistance
- ASME B18.21.1 compliance guarantees consistent quality and dimensional accuracy
- RoHS 3 and REACH compliance ensures environmental safety and regulatory acceptance
- Standard split lock design offers reliable spring action for consistent locking performance
Professional Applications & Engineering Value
This black-oxide steel split lock washer provides critical vibration damping in demanding industrial applications where fastener security is paramount. The split lock washer design creates continuous spring tension that counters vibrational forces in machinery, automotive assemblies, and heavy equipment. The black-oxide surface treatment offers enhanced corrosion resistance, making it ideal for outdoor applications or environments with moisture exposure. With its Rockwell C38 hardness and precise 0.26" ID specification, this washer maintains structural integrity under load while ensuring perfect compatibility with 1/4" screws. Engineers specify this component for applications requiring reliable vibration-resistant locking without the need for additional locking compounds or complex fastening systems.
Specification Summary & Compliance
This standard split lock washer features precise dimensional specifications including 0.26" inner diameter, 0.487" outer diameter, and 0.062" thickness. Manufactured to ASME B18.21.1 specifications, it ensures consistent performance and interchangeability. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components. The Rockwell C38 hardness provides the optimal balance between flexibility and strength required for effective locking performance in inch system applications.
