S-94630A118 31 mm ID x 68 mm OD DIN 6340 Oversized Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution: Large 68mm outer diameter effectively spreads pressure, protecting surfaces and preventing component damage in high-stress applications.
• Superior Durability: Made from hardened steel with a Rockwell C35 hardness for excellent resistance to wear, deformation, and long-term fatigue.
• Precision Fit for M30 Fasteners: 31mm inner diameter ensures a secure and accurate fit with M30 screws, reducing vibration loosening and maintaining assembly integrity.
• Robust Construction: Generous 9.0-11.0mm thickness provides substantial material strength, ideal for heavy-duty and industrial machinery.
• Guaranteed Standard Compliance: Manufactured to DIN 6340 specifications, ensuring consistent quality, dimensional accuracy, and reliable performance.
• Environmental and Safety Compliance: Certified RoHS 3 and REACH compliant, making them safe for use in regulated industries and global markets.
• Versatile Metric Sizing: Metric system dimensions facilitate easy integration into international engineering designs and replacement part inventories.

Professional Applications & Engineering Value

This M30 flat washer is engineered to solve critical challenges in industrial applications where vibration, high loads, and material integrity are paramount. The steel construction and Rockwell C35 hardness directly combat issues of fastener loosening and surface brinelling under dynamic loads. Its design, conforming to the DIN 6340 standard, provides a reliable, standardized solution for machinery, structural steelwork, and heavy equipment assembly. The precise 31mm ID ensures a perfect match for M30 screws, eliminating play and maintaining clamp force, while the substantial 68mm OD and thickness effectively distribute bearing stress, preventing joint failure and extending the service life of the entire assembly. This makes it an indispensable component for engineers seeking reliability in demanding environments.

Specification Summary & Compliance

This flat washer features an Inner Diameter (ID) of 31 mm, Outer Diameter (OD) of 68 mm, and a Thickness of 9.0-11.0 mm, designed for use with M30 screw sizes. It is manufactured from steel with a hardness of Rockwell C35. The product is produced in strict accordance with the DIN 6340 standard, ensuring precise dimensional tolerances and performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial components.