S-98040A108 15 mm ID x 27 mm OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-oxide coating, extending service life in humid or outdoor environments.
• Exceptional load distribution from precise 15mm ID and 27mm OD dimensions, preventing surface damage and loosening under high stress.
• High mechanical durability due to Rockwell 15N80 hardness, resisting deformation in heavy-duty applications.
• Reliable fit for M14 screws, ensuring secure fastening and reducing assembly time in metric-based systems.
• Compliance with stringent environmental regulations including RoHS 3 and REACH, facilitating global supply chain integration.
• Consistent thickness (4.5-5.4mm) for uniform pressure application, enhancing joint stability in industrial machinery.
• Versatile metric sizing compatible with standard M14 components, streamlining inventory for diverse engineering projects.

Professional Applications & Engineering Value

This M14 black-oxide steel flat washer addresses critical challenges in industrial assemblies where corrosion and mechanical stress compromise longevity. The black-oxide surface treatment forms a robust barrier against oxidation, ideal for automotive, construction, or marine equipment exposed to moisture. Its metric dimensions (15x27mm) and Rockwell 15N80 hardness ensure precise load spreading, minimizing bolt fatigue and surface indentation in high-vibration settings like heavy machinery or structural frameworks. By combining corrosion resistance with high-strength steel material, it reduces maintenance frequency and enhances safety in demanding operations, from conveyor systems to renewable energy installations.

Specification Summary & Compliance

Manufactured to standard metric specifications with an inner diameter of 15mm, outer diameter of 27mm, and thickness range of 4.5–5.4mm for consistent performance. The washer complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel alloys and REACH (EC 1907/2006) SVHC standards as of January 2023, ensuring environmental safety. Its Rockwell 15N80 hardness guarantees dimensional stability under load, suitable for industrial fastening systems requiring reliable, long-term integrity.