S-91074A160 1.59" ID x 2.3" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments, reducing maintenance needs and equipment downtime.
• Zinc-flake-coated steel construction provides excellent corrosion resistance, ensuring long-term reliability in harsh industrial conditions.
• Dual-sided top and bottom serrations bite securely into mating surfaces for a permanent, non-slip lock.
• High Rockwell C46 hardness maintains structural integrity and prevents deformation under heavy loads.
• Available in both inch (1 1/2") and metric (M39) screw sizes for versatile application across global equipment standards.
• RoHS 3 and REACH compliance guarantees safe, environmentally responsible use in regulated industries.
• Precise dimensional tolerances (1.59" ID, 2.3" OD, 0.250-0.270" thickness) ensure consistent fit and performance.

Professional Applications & Engineering Value

This zinc-flake-coated steel wedge lock washer is engineered to solve critical vibration-induced loosening in heavy machinery, construction equipment, and transportation systems. The dual serration design on both top and bottom surfaces creates a powerful mechanical lock that resists rotational forces, eliminating the need for frequent retightening. Made from high-strength steel with a Rockwell C46 hardness, it withstands extreme pressure without flattening or losing its locking capability. The zinc-flake coating provides superior protection against rust and chemical exposure, making it ideal for outdoor, marine, and industrial applications where corrosion is a concern. Compatible with both 1 1/2" inch and M39 metric screws, it offers flexibility for multinational projects and equipment maintenance, ensuring reliable performance in the most demanding environments.

Specification Summary & Compliance

This washer features precise dimensions: 1.59" Inner Diameter, 2.3" Outer Diameter, and 0.250-0.270" Thickness, designed for use with 1 1/2" and M39 fasteners. Manufactured from zinc-flake-coated steel with a Rockwell C46 hardness, it meets industrial standards for locking washers. 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 safe for use in regulated industrial applications worldwide.