S-91235A612 4.2 mm ID x 10 mm OD Heavy-Vibration-Resistant Spring Lock Washers
Heavy-Vibration-Resistant Spring Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through spring lock design that maintains tension under dynamic loads
- Enhanced corrosion protection with black-oxide coated stainless steel construction for harsh environments
- Consistent performance ensured by Rockwell C38 hardness rating for reliable spring action
- Precise M4 compatibility with 4.2mm ID and 10mm OD dimensions for accurate fastener fit
- Space-efficient design with 0.5mm thickness and 0.75mm overall height for compact assemblies
- Regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
- Long-term durability from stainless steel material that resists wear and maintains locking force
Professional Applications & Engineering Value
This M4 spring lock washer delivers critical vibration-resistant fastening for demanding industrial applications where loosening under dynamic loads can cause equipment failure. The black-oxide stainless steel construction provides superior corrosion resistance in harsh environments including marine, chemical processing, and outdoor equipment. With Rockwell C38 hardness, the washer maintains consistent spring tension and locking force through repeated compression cycles. The metric dimensions (4.2mm ID, 10mm OD) ensure perfect compatibility with M4 fasteners in precision assemblies. Ideal for machinery, automotive systems, and electronic enclosures requiring reliable vibration protection and corrosion resistance without frequent maintenance.
Specification Summary & Compliance
This metric spring lock washer features precise dimensional specifications: 4.2mm internal diameter, 10mm outer diameter, 0.5mm thickness, and 0.75mm overall height, engineered for M4 screw applications. Manufactured from black-oxide stainless steel with Rockwell C38 hardness to maintain spring properties and locking performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and chemical substance restrictions are met for industrial use across global markets.
