S-97913A123 0.28" ID x 0.53" OD Extreme-Vibration-Resistant Wedge Lock Washers

Extreme-Vibration-Resistant Wedge Lock Washers

1329FA00127 Extreme-Vibration-Resistant Wedge Lock Washers
1329FA00127 Extreme-Vibration-Resistant Wedge Lock Washers

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

Part No.
Part No. 1329FA00127
Equivalent to mcmaster :
97913A123

Basic Information

System of Measurement Inch
Washer Type Wedge Lock

Dimension Parameters

ID 0.28"
OD 0.53"
Thickness 0.090-0.110"

Material & Strength Parameters

Material Black Zinc-Flake-Coated Steel
Hardness Rockwell C48

Installation & Application Parameters

For Screw Size 1/4"

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 wedge lock design that maintains clamping force under extreme conditions
  • Enhanced corrosion protection with black zinc-flake coating for extended service life in harsh environments
  • Maximum locking security with dual-sided serrations (top and bottom) that bite into mating surfaces
  • Exceptional durability from Rockwell C48 hardened steel construction that resists deformation
  • Precise dimensional fit with 0.28" ID and 0.53" OD ensuring proper installation on 1/4" fasteners
  • Reliable performance in high-stress applications due to consistent 0.090-0.110" thickness tolerance
  • Environmental compliance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This wedge lock washer delivers critical vibration-resistant performance in demanding industrial settings where conventional fasteners fail. The black zinc-flake-coated steel construction provides exceptional corrosion resistance, making it ideal for outdoor equipment, automotive assemblies, and machinery exposed to moisture and chemicals. The top and bottom serrations create multiple biting surfaces that prevent rotational loosening, ensuring permanent fastening in high-vibration applications like engine mounts, heavy machinery, and structural frameworks. Engineered with Rockwell C48 hardness, this washer maintains its locking capability through repeated stress cycles, solving common maintenance issues in industrial washers applications where reliability is paramount.

Specification Summary & Compliance

This inch-system washer features precise dimensional specifications: 0.28" inner diameter, 0.53" outer diameter, and thickness range of 0.090-0.110" for consistent performance. Manufactured from hardened steel with Rockwell C48 hardness, the wedge lock design with dual-sided serrations ensures reliable vibration resistance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, meeting the latest regulatory requirements for industrial components.

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