S-91235A211 0.252" ID x 0.551" OD Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 17-7 PH stainless steel construction, ideal for harsh environments and extending service life.
• Superior spring action and locking force prevents loosening from vibration, ensuring joint integrity in dynamic applications.
• High strength and durability provided by Rockwell C38 hardness, offering reliable performance under heavy loads.
• Precise dimensional fit with 0.252" ID and 0.551" OD, designed for accurate installation on 1/4" screws.
• Consistent thickness and height (0.048-0.052" and 0.067") for uniform pressure distribution and predictable performance.
• Compliance with stringent environmental regulations including RoHS 3 and REACH, ensuring safe and responsible use in global markets.
• Optimized for inch system applications, providing seamless integration with standard industrial equipment and components.

Professional Applications & Engineering Value

This 17-7 PH stainless steel spring lock washer is engineered to address critical challenges in demanding industrial settings, such as vibration-induced fastener failure and corrosion degradation. Its high-strength material and Rockwell C38 hardness ensure it maintains locking force under continuous stress, making it ideal for machinery, automotive assemblies, and heavy equipment. The precise inch dimensions (0.252" ID and 0.551" OD) guarantee a secure fit on 1/4" screws, reducing installation errors and maintenance downtime. With excellent corrosion resistance, it performs reliably in humid or chemically aggressive environments, supporting long-term operational safety and reducing replacement costs. This washer is a trusted solution for engineers seeking durability and compliance in industrial applications.

Specification Summary & Compliance

This washer features an ID of 0.252", OD of 0.551", thickness of 0.048-0.052", and overall height of 0.067", designed for use with 1/4" screws in the inch system. It meets standard dimensional tolerances for spring lock washers and is manufactured from 17-7 PH stainless steel with a Rockwell C38 hardness for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.