S-90504A121 17 mm ID x 30 mm OD DIN 137B Wave Spring Lock Washers

Key Features & Benefits at a Glance

• Superior vibration damping to maintain joint integrity and reduce noise in dynamic applications
• Excellent corrosion resistance thanks to the black-oxide coating, extending service life in harsh environments
• Reliable spring action and load distribution to compensate for thermal expansion, wear, and machining tolerances
• High durability and strength from Rockwell C42 hardened steel, resisting deformation under repeated loads
• Precise dimensional fit with 17mm ID specifically designed for M16 screws, ensuring easy installation
• Guaranteed compliance with the DIN 137B standard for consistent performance and interchangeability
• Safe for regulated industries with full RoHS 3 and REACH compliance, meeting strict environmental and safety standards

Professional Applications & Engineering Value

This M16 Black-Oxide Steel wave washer is engineered to solve critical challenges in industrial assembly and machinery. Its wave form design provides a consistent spring force that absorbs shocks and compensates for dimensional changes caused by thermal cycling or settling, preventing bolt loosening in vibration-prone applications like automotive engines, electric motors, and heavy equipment. The black-oxide finish on the carbon steel substrate offers a robust barrier against oxidation and mild corrosion, making it suitable for use in environments where moisture or chemicals are present. By ensuring maintained clamp load and acting as a vibration-resistant component, this washer enhances the reliability and longevity of the entire fastened joint, reducing maintenance needs and downtime.

Specification Summary & Compliance

This washer conforms to the dimensional and technical requirements of the DIN 137B standard. Key specifications include an Inside Diameter (ID) of 17 mm, Outside Diameter (OD) of 30 mm, and a material thickness of 1.6 mm. It is manufactured from hardened steel with a Rockwell C42 hardness and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial and consumer products.