S-91074A312 0.17" ID x 0.35" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments, ensuring long-term joint integrity.
• Enhanced locking grip from top and bottom serrations provides maximum surface contact and prevents rotation under dynamic loads.
• Exceptional durability with a Rockwell C46 hardness rating, offering high resistance to wear and deformation.
• Reliable corrosion protection from the zinc-flake coating, extending service life in demanding industrial conditions.
• Dual-system compatibility fits both No. 8 (inch) and M4 (metric) screw sizes, simplifying inventory for global operations.
• Precise dimensional control with a 0.17" ID and 0.35" OD ensures consistent performance and easy installation.
• Compliance with stringent regulations including RoHS 3 and REACH, making it suitable for regulated industries and export markets.

Professional Applications & Engineering Value

This zinc-flake-coated steel wedge lock washer is engineered to solve critical challenges in machinery, automotive, and heavy equipment assembly where vibration-induced loosening is a major concern. The top and bottom serrations bite into both the bearing surface and fastener head, creating a powerful mechanical lock that maintains clamp load under cyclic stresses. Made from high-strength steel and treated to a Rockwell C46 hardness, it resists embedding and fatigue, ensuring the locking performance remains effective over time. The corrosion-resistant zinc-flake coating further enhances durability in harsh environments, making it an ideal vibration resistant washer for demanding industrial applications that require reliable, long-lasting fastening solutions.

Specification Summary & Compliance

This washer features an Inside Diameter (ID) of 0.17", Outside Diameter (OD) of 0.35", and a Thickness range of 0.060-0.080". It is designed for use with No. 8 (inch) and M4 (metric) screw sizes, ensuring broad compatibility. The product is manufactured to high-quality standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial markets.