S-91074A330 0.34" ID x 0.65" OD Extreme-Vibration-Resistant Wedge Lock Washers

Extreme-Vibration-Resistant Wedge Lock Washers

1329FA00034 Extreme-Vibration-Resistant Wedge Lock Washers
1329FA00034 Extreme-Vibration-Resistant Wedge Lock Washers

Image may differ from product. See technical specification for details.

Part No.
Part No. 1329FA00034
Equivalent to mcmaster :
91074A330

Basic Information

System of Measurement Inch and Metric
Washer Type Wedge Lock

Dimension Parameters

ID 0.34"
OD 0.65"
Thickness 0.090-0.110"

Material & Strength Parameters

Material Zinc-Flake Coated Steel
Hardness Rockwell C46

Installation & Application Parameters

For Screw Size 5/16", M8

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 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 through dual-sided serrations that bite into mating surfaces, preventing loosening under extreme dynamic loads
  • Enhanced corrosion protection with zinc-flake coating that provides excellent durability in harsh industrial environments
  • Exceptional hardness performance with Rockwell C46 rating ensuring long-term structural integrity and wear resistance
  • Dual measurement compatibility designed for both 5/16" and M8 fasteners, offering flexibility across international projects
  • Precise dimensional control with 0.34" ID and 0.65" OD ensuring perfect fit and optimal load distribution
  • Consistent thickness tolerance between 0.090-0.110" for reliable performance and uniform clamping force
  • Full regulatory compliance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This wedge lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. The zinc-flake-coated steel construction provides superior corrosion resistance in harsh environments, while the top and bottom serrations create a mechanical locking action that prevents rotational loosening under extreme vibration and dynamic loading conditions. Engineered with Rockwell C46 hardness, these washers maintain their structural integrity and locking capabilities through repeated stress cycles, making them ideal for heavy machinery, automotive assemblies, construction equipment, and industrial manufacturing applications where reliable fastener performance is essential for operational safety and reduced maintenance requirements.

Specification Summary & Compliance

This wedge lock washer features precise dimensional specifications with 0.34" inner diameter, 0.65" outer diameter, and thickness ranging from 0.090" to 0.110". Designed for compatibility with both 5/16" and M8 screw sizes, it meets industrial standards for locking washers with dual-sided serration technology. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications worldwide.

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