S-91144A116 28 mm ID x 50 mm OD DIN 6916, ISO 7416 Structural Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to hot-dipped galvanized steel coating, ensuring long-term reliability in harsh environments.
• Superior load distribution with precise 28mm ID and 50mm OD dimensions, minimizing surface pressure and preventing material damage.
• Enhanced structural integrity from Rockwell C45 hardness, providing excellent resistance to deformation under heavy loads.
• Guaranteed dimensional accuracy through compliance with DIN 6916 and ISO 7416 standards, ensuring perfect fit with M27 screws.
• Reliable performance in demanding applications due to robust 4.4-5.6mm thickness, offering stability in high-stress scenarios.
• Environmental and safety compliance with RoHS 3 and REACH standards, making it suitable for regulated industrial sectors.
• Optimized for heavy-duty use in construction and industrial settings, where durability and consistent performance are critical.

Professional Applications & Engineering Value

This hot-dipped galvanized steel flat washer is engineered to address common industrial challenges such as corrosion, vibration loosening, and load concentration. Its heavy-duty construction and adherence to DIN 6916 and ISO 7416 standards ensure precise compatibility with M27 metric screws, making it ideal for structural steel connections, machinery assembly, and infrastructure projects. The galvanized surface treatment provides a protective barrier against moisture and chemicals, extending service life in outdoor or corrosive environments. By distributing clamp load evenly across a wider area, it prevents joint failure and reduces maintenance needs, delivering reliable engineering value in construction, manufacturing, and industrial maintenance applications.

Specification Summary & Compliance

This flat washer features an inner diameter of 28mm, outer diameter of 50mm, and thickness range of 4.4-5.6mm, designed for M27 screw size with high dimensional precision per DIN 6916 and ISO 7416 standards. Manufactured from hot-dipped galvanized steel with a hardness of Rockwell C45, it meets rigorous industry specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.