S-91122A311 38 mm ID Square Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments.
• Superior load distribution with a 50mm width and square shape, preventing fastener loosening and surface damage under high stress.
• Optimized for M30 metric screws with a precise 38mm inner diameter, guaranteeing a perfect fit and secure fastening.
• Enhanced durability and deformation resistance from a 6.0mm thickness and Rockwell B84 hardness, ideal for heavy-duty applications.
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safety and environmental responsibility for industrial use.
• Reliable performance in demanding conditions due to the robust material and dimensional stability, reducing maintenance needs.
• Versatile metric sizing that integrates seamlessly into global engineering projects requiring standardized components.

Professional Applications & Engineering Value

This 38mm ID Square Washer is engineered from 18-8 Stainless Steel to address common industrial challenges like corrosion, vibration, and high-load stress. Its square design and substantial 50mm width provide a larger bearing surface, effectively distributing pressure and preventing bolt head embedment in soft materials or structural fatigue. With a 6.0mm thickness and Rockwell B84 hardness, it resists deformation under heavy loads, making it ideal for construction, machinery assembly, and marine applications. The M30 metric compatibility ensures precise fitment, while the stainless steel material offers excellent resistance to rust and chemicals, reducing downtime and replacement costs in aggressive environments.

Specification Summary & Compliance

This washer features a 38mm inner diameter tailored for M30 screws in metric systems, with a 50mm width and 6.0mm thickness for consistent performance. It adheres to standard dimensional tolerances for industrial washers and is manufactured from 18-8 Stainless Steel with a Rockwell B84 hardness to meet rigorous mechanical demands. 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 supply chains.