S-91102A750 0.26" ID x 0.487" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments, ensuring long-term joint integrity
• Zinc-plated steel construction provides excellent corrosion protection for extended service life in industrial conditions
• Rockwell C38 hardness rating delivers exceptional durability and maintains spring tension under repeated loading
• Precision 0.26" ID design ensures perfect fit and optimal clamping force for 1/4" fasteners
• ASME B18.21.1 compliance guarantees consistent performance and interchangeability in demanding applications
• Environmental compliance with RoHS 3 and REACH standards meets global regulatory requirements
• Standard split lock design offers reliable, cost-effective vibration protection for maintenance and production applications

Professional Applications & Engineering Value

This zinc-plated steel split lock washer addresses critical vibration-induced loosening challenges in industrial assemblies. The standard split lock washer design creates continuous spring tension that compensates for thermal expansion, material relaxation, and dynamic loads. Engineered specifically for 1/4" screw size applications, the 0.26" ID provides precise fastener engagement while the 0.487" OD distributes clamping pressure effectively. The Rockwell C38 hardness ensures the washer maintains its spring characteristics without taking a permanent set, making it ideal for machinery, equipment manufacturing, and automotive applications where vibration resistance is paramount. The zinc plating offers sacrificial protection against corrosion, extending service life in challenging environments.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications with 0.26" inner diameter, 0.487" outer diameter, and 0.062" thickness, engineered for optimal performance with 1/4" fasteners. Manufactured to ASME B18.21.1 standards, it ensures consistent quality and dimensional accuracy. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental standards for industrial components. The Rockwell C38 hardness specification guarantees the mechanical properties required for reliable vibration-resistant performance in inch-system applications.