S-91812A232 0.45" ID x 0.73" OD Extreme-Vibration-Resistant Wedge Lock Washers

Extreme-Vibration-Resistant Wedge Lock Washers

1329FA00061 Extreme-Vibration-Resistant Wedge Lock Washers
1329FA00061 Extreme-Vibration-Resistant Wedge Lock Washers

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Part No.
Part No. 1329FA00061
Equivalent to mcmaster :
91812A232

Basic Information

System of Measurement Inch and Metric
Washer Type Wedge Lock

Dimension Parameters

ID 0.45"
OD 0.73"
Thickness 0.080-0.100"

Material & Strength Parameters

Material 316 Stainless Steel
Hardness Rockwell C51
Heat Treatment Case Hardened

Installation & Application Parameters

For Screw Size 7/16", M11

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/10/2022, 224 SVHC) Compliant

Special Type Parameters

Serration Location Top and Bottom
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior vibration resistance prevents fastener loosening in high-stress environments, ensuring long-term joint integrity
  • Dual-sided serration technology provides maximum locking force on both contact surfaces for enhanced security
  • 316 stainless steel construction delivers exceptional corrosion resistance in harsh industrial environments
  • Case hardened to Rockwell C51 maintains structural integrity under heavy loads and repeated stress
  • Dual measurement compatibility works with both 7/16" and M11 screw sizes for versatile application across systems
  • Precision dimensional control with 0.45" ID and 0.73" OD ensures perfect fit and optimal load distribution
  • Full regulatory compliance with RoHS 3 and REACH standards for global market acceptance and environmental safety

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer addresses critical vibration-induced failure points in heavy machinery, transportation equipment, and structural assemblies. The top and bottom serration design creates mechanical interference that resists rotational forces, making it ideal for applications where constant motion or impact loads threaten joint stability. The case hardened surface maintains serration sharpness while the 316 stainless steel core provides exceptional resistance to chemical exposure, saltwater environments, and extreme temperatures. This combination of vibration-resistant locking and corrosion protection extends maintenance intervals and reduces downtime in demanding industrial settings from marine equipment to processing facilities.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 0.45" inner diameter, 0.73" outer diameter, and thickness ranging 0.080-0.100". Compatible with 7/16" and M11 screw sizes for both inch and metric applications. The washer undergoes case hardening treatment to achieve Rockwell C51 hardness for optimal wear resistance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, including the latest SVHC requirements as of June 2022, ensuring environmental safety and global market acceptance.

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