S-91190A510 3.4 mm ID x 5.6 mm OD DIN 7980 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance ensures long-term fastener security in high-stress environments
• Black-oxide steel construction provides excellent corrosion resistance for extended service life
• Rockwell C44 hardness rating maintains structural integrity under repeated loading cycles
• Precision M3 sizing (3.4mm ID/5.6mm OD) guarantees perfect fit with standard metric fasteners
• DIN 7980 compliance delivers consistent performance meeting international engineering standards
• Environmental compliance with RoHS 3 and REACH regulations for global manufacturing applications
• Optimized thickness range (0.9-1.1mm) provides reliable spring action without compromising space constraints

Professional Applications & Engineering Value

These M3 metric split lock washers solve critical vibration-induced loosening problems in industrial assemblies. The black-oxide steel material combined with the standard split lock design creates continuous spring tension that counters rotational forces in machinery, automotive, and electrical applications. The Rockwell C44 hardness ensures the washer maintains its clamping force through thermal cycling and mechanical stress, while the DIN 7980 specification guarantees dimensional accuracy for seamless integration with M3 screw fasteners. This combination addresses the fundamental need for maintenance-free reliability in vibration-prone environments.

Specification Summary & Compliance

Manufactured to DIN 7980 standards with precise dimensions: 3.4mm internal diameter, 5.6mm outer diameter, and 0.9-1.1mm thickness range. The washers feature Rockwell C44 hardness and meet comprehensive compliance requirements including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. These standard split lock washers are engineered for M3 screw applications with consistent performance across industrial environments.