S-91116A140 5.3 mm ID x 15 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extending service life
• Precise dimensional fit with 5.3mm ID and 15mm OD, ensuring reliable load distribution and secure M5 screw seating
• Enhanced durability from Rockwell B52 hardness, providing excellent resistance to deformation under pressure
• Guaranteed interchangeability through strict DIN 9021 compliance, facilitating seamless integration in metric assemblies
• Environmental and safety assurance with full RoHS 3 and REACH compliance, meeting stringent international regulations
• Consistent thickness (1.0-1.4mm) for uniform pressure application, reducing the risk of joint loosening
• Broad industrial compatibility as a metric flat washer, suitable for machinery, automotive, and construction applications

Professional Applications & Engineering Value

This M5 flat washer delivers critical engineering value by addressing common industrial challenges such as corrosion-induced failure and inconsistent load distribution. Manufactured from 18-8 stainless steel, it offers inherent resistance to rust and chemical exposure, making it ideal for outdoor equipment, marine hardware, and food processing machinery where moisture is prevalent. The DIN 9021 standard ensures precise metric dimensions (5.3mm ID, 15mm OD) that prevent misalignment and distribute clamping force evenly, protecting sensitive components from surface damage. Its Rockwell B52 hardness maintains structural integrity under vibration and thermal cycling, reducing maintenance frequency. These attributes make it a reliable choice for industrial washers in automotive assemblies, electrical enclosures, and structural bolting, enhancing overall system longevity and safety.

Specification Summary & Compliance

This flat washer conforms to DIN 9021 specifications, with an inner diameter of 5.3 mm, outer diameter of 15 mm, and thickness ranging from 1.0 to 1.4 mm, ensuring dimensional accuracy for M5 screw applications. It is manufactured from 18-8 stainless steel and achieves a hardness of Rockwell B52 for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and health safety standards.