S-91812A430 0.34" ID x 0.65" OD Extreme-Vibration-Resistant Wedge Lock Washers

Extreme-Vibration-Resistant Wedge Lock Washers

1329FA00076 Extreme-Vibration-Resistant Wedge Lock Washers
1329FA00076 Extreme-Vibration-Resistant Wedge Lock Washers

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

Part No.
Part No. 1329FA00076
Equivalent to mcmaster :
91812A430

Basic Information

System of Measurement Inch and Metric
Washer Type Wedge Lock

Dimension Parameters

ID 0.34"
OD 0.65"
Thickness 0.070-0.090"

Material & Strength Parameters

Material 316 Stainless Steel
Hardness Rockwell C51
Heat Treatment Case Hardened

Installation & Application Parameters

For Screw Size 5/16", M8

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

  • Exceptional vibration resistance through wedge lock design prevents fastener loosening in high-stress environments
  • Superior corrosion resistance with 316 stainless steel construction for harsh chemical and marine applications
  • Maximum locking power from dual top and bottom serrations that bite into mating surfaces
  • Enhanced durability with case hardening to Rockwell C51 for extended service life
  • Versatile compatibility with both 5/16" and M8 screw sizes for flexible application across systems
  • Reliable performance in demanding conditions thanks to precise dimensional control and material integrity
  • Environmental compliance with RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This 316 stainless steel wedge lock washer delivers critical vibration resistance where conventional fasteners fail. The dual serration technology on both top and bottom surfaces creates multiple biting points that mechanically lock the assembly, preventing rotation and maintaining clamp load under extreme vibration. Engineered with case hardening to Rockwell C51, these washers withstand repeated loading cycles without deformation. The 316 stainless steel material provides exceptional resistance to chlorides, chemicals, and marine environments, making these vibration resistant washers ideal for heavy machinery, transportation equipment, offshore platforms, and processing facilities where reliability is non-negotiable and maintenance downtime must be minimized.

Specification Summary & Compliance

Precision manufactured to exacting standards with ID: 0.34", OD: 0.65", and thickness: 0.070-0.090" for consistent performance. Compatible with 5/16" and M8 screw sizes in both inch and metric systems. Features case hardened construction achieving Rockwell C51 hardness for superior wear resistance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial applications.

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