S-91074A145 1.35" ID x 1.91" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through dual-sided serrations that bite into mating surfaces, preventing loosening under extreme dynamic loads
• Exceptional corrosion protection with zinc-flake coating that provides long-term durability in harsh industrial environments
• Enhanced load distribution with precise 1.35" ID and 1.91" OD dimensions that optimize contact area for 1 1/4" and M33 fasteners
• Maintained clamping force thanks to Rockwell C46 hardness that resists deformation under high torque applications
• Versatile installation compatibility with both inch and metric screw systems, reducing inventory requirements
• Consistent performance ensured by controlled thickness variation (0.220-0.240") for reliable seating and pressure distribution
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

This wedge lock washer delivers critical vibration resistance in demanding applications where traditional fasteners fail. The zinc-flake-coated steel construction provides exceptional corrosion protection while maintaining structural integrity. Dual top and bottom serrations create positive locking action by biting into both bolt head and surface materials, effectively solving vibration-induced loosening in heavy machinery, construction equipment, and transportation systems. The Rockwell C46 hardness ensures the washer maintains its locking capability without deforming under repeated stress cycles. Engineered for both 1 1/4" and M33 screw sizes, this versatile component bridges imperial and metric requirements in global manufacturing and maintenance operations, making it ideal for OEM assemblies and aftermarket repairs across multiple industries.

Specification Summary & Compliance

This heavy-duty wedge lock washer features precise dimensional specifications including 1.35" ID, 1.91" OD, and thickness range of 0.220-0.240". Manufactured from zinc-flake-coated steel with Rockwell C46 hardness rating, it's designed for use with 1 1/4" and M33 fasteners. The product maintains strict quality standards with dual-sided serrations for maximum locking effectiveness. Compliance certifications include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) with current SVHC compliance as of June 2022, ensuring environmental responsibility and global market acceptance.