S-95221A105 4.3 mm ID x 9 mm OD DIN 6796 Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through conical spring design that maintains constant tension under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
• Reliable locking performance with Rockwell C42 hardness ensuring consistent spring force and deformation resistance
• Precision dimensional compatibility with 4.3mm ID and 9mm OD designed specifically for M4 screw applications
• Guaranteed mechanical performance through strict adherence to DIN 6796 manufacturing standards
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global industrial use
• Optimal space utilization with compact 1.3mm overall height while delivering maximum spring action

Professional Applications & Engineering Value

Our M4 zinc-plated steel spring lock washers deliver critical vibration resistance in demanding industrial applications where fastener loosening can compromise safety and performance. The precision conical shape creates continuous spring tension that compensates for thermal expansion, material relaxation, and dynamic loading conditions common in machinery, automotive assemblies, and electrical enclosures. Manufactured from zinc-plated steel with Rockwell C42 hardness, these washers maintain their locking force through repeated compression cycles while providing corrosion resistance. The metric dimensional specifications (4.3mm ID, 9mm OD) ensure perfect compatibility with M4 fasteners, eliminating play and ensuring uniform load distribution. These DIN 6796 compliant washers solve critical engineering challenges in vibration-prone environments where traditional flat washers fail to maintain bolt preload.

Specification Summary & Compliance

This spring lock washer features precise metric dimensions with 4.3mm inner diameter, 9mm outer diameter, and 1mm thickness. Manufactured to DIN 6796 specifications with Rockwell C42 hardness certification, ensuring consistent mechanical properties and performance. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring restricted substance control. The conical spring design provides reliable locking action while meeting international standards for quality and safety in fastener applications.