S-91235A615 7.2 mm ID x 14 mm OD Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance maintains secure fastening in high-stress environments, preventing loosening from machinery or equipment movement
• Exceptional corrosion protection from black-oxide stainless steel construction ensures long-term reliability in harsh industrial conditions
• Precise M7 screw compatibility with 7.2mm internal diameter provides perfect fit and consistent performance in metric assemblies
• Optimized spring tension with 0.9mm overall height delivers reliable locking force while maintaining material integrity
• Enhanced durability with Rockwell C38 hardness rating withstands repeated compression cycles without deformation
• Regulatory compliance assurance with RoHS 3 and REACH certifications meets international environmental and safety standards
• Space-efficient design with 14mm OD and 0.5mm thickness fits compact assemblies without compromising performance

Professional Applications & Engineering Value

This M7 metric spring lock washer delivers critical engineering value by solving persistent vibration-induced loosening in industrial equipment. The black-oxide stainless steel construction provides dual protection: the stainless steel base material offers excellent corrosion resistance, while the black-oxide surface treatment enhances wear resistance and reduces galling. With its precise 7.2mm internal diameter engineered specifically for M7 fasteners, this washer ensures perfect alignment and consistent spring tension across automotive assemblies, machinery manufacturing, and electrical enclosures. The Rockwell C38 hardness maintains structural integrity through thousands of compression cycles, making it ideal for applications requiring repeated disassembly and reassembly. This combination of material properties and dimensional precision addresses the critical need for reliable vibration resistance in demanding industrial environments where fastener failure can lead to costly downtime and safety hazards.

Specification Summary & Compliance

This metric spring lock washer features precise dimensions of 7.2mm ID, 14mm OD, and 0.5mm thickness with 0.9mm overall height, engineered to ISO metric standards for M7 screw applications. The manufacturing process ensures consistent spring tension and dimensional accuracy across production batches. Compliance includes full adherence to RoHS 3 (2015/863/EU) for hazardous substance restriction and REACH (EC 1907/2006) regulations regarding chemical safety, with verification against 233 SVHC substances as of January 17, 2023. The black-oxide stainless steel material and Rockwell C38 hardness specification ensure consistent performance meeting industrial fastener requirements for vibration resistance and durability.