S-92148A160 4.5 mm ID x 7.6 mm OD DIN 127B Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments, ensuring long-term joint integrity.
• Corrosion-resistant 18-8 stainless steel provides excellent durability in humid, chemical, or outdoor applications, reducing maintenance needs.
• Precision DIN 127B standard design guarantees consistent performance and interchangeability in metric assembly systems.
• Optimized 4.5mm ID and 7.6mm OD dimensions ensure a perfect fit for M4 screws, facilitating quick and accurate installation.
• Split lock spring action applies continuous pressure to maintain clamp load, compensating for thermal expansion or material relaxation.
• RoHS 3 and REACH compliance meets stringent industrial safety and environmental regulations for global supply chain integration.
• Cost-effective reliability from standardized metric manufacturing reduces downtime and replacement frequency in repetitive use.

Professional Applications & Engineering Value

This M4 split lock washer is engineered to solve critical fastening challenges in dynamic or vibrating machinery. The 18-8 stainless steel material resists oxidation and chemical degradation, making it ideal for automotive assemblies, electrical enclosures, and marine equipment where moisture exposure is common. Its DIN 127B compliant split design acts as a spring, applying constant axial force to counter vibrational loosening—a common failure point in motors, conveyor systems, and precision instruments. By maintaining secure fastening under thermal cycling and load variations, it enhances operational safety and reduces maintenance interventions, providing reliable performance in demanding industrial applications.

Specification Summary & Compliance

This washer conforms to DIN 127B dimensional standards with an inner diameter of 4.5mm, outer diameter of 7.6mm, and thickness range of 0.8-1.0mm, ensuring precise compatibility with M4 screw sizes. Manufactured from 18-8 stainless steel, it meets material consistency requirements for general-purpose locking applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its adherence to environmental and health safety standards for industrial use.