S-99041A214 0.285" ID Square Washers

Square Washers

1283FA00172 Square Washers
1283FA00172 Square Washers

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

Part No.
Part No. 1283FA00172
Equivalent to mcmaster :
99041A214

Basic Information

System of Measurement Inch
Washer Type Square

Dimension Parameters

ID 0.285"
Thickness 0.054-0.066"
Width 1"

Material & Strength Parameters

Material Zinc-Plated Steel
Hardness Rockwell B40

Installation & Application Parameters

For Screw Size 1/4"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Enhanced corrosion resistance through zinc-plated steel construction, extending service life in demanding industrial environments
  • Superior load distribution with 1" square design, preventing surface damage and maintaining joint integrity under heavy loads
  • Consistent mechanical performance with Rockwell B40 hardness, ensuring reliable performance without deformation
  • Precision dimensional control with 0.285" ID and 0.054-0.066" thickness, guaranteeing perfect fit for 1/4" fasteners
  • Regulatory compliance assurance meeting RoHS 3 and REACH standards, enabling global industrial applications
  • Optimized stress distribution through square geometry, reducing point loading and material fatigue
  • Durable surface protection that maintains electrical conductivity while providing excellent wear resistance

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these square washers provide critical solutions for mechanical assemblies requiring superior load-bearing capabilities. The zinc-plated steel construction offers exceptional corrosion protection in harsh environments, from outdoor construction to manufacturing equipment. The square geometry significantly increases surface contact area compared to round washers, effectively distributing clamping forces across a wider area to prevent surface indentation and material deformation. This makes them ideal for structural applications where vibration resistance and joint stability are paramount. The precise 0.285" inner diameter ensures perfect alignment with 1/4" fasteners, while the controlled thickness maintains consistent preload in bolted connections. These industrial washers deliver reliable performance in machinery, structural steel connections, and heavy equipment where traditional round washers may fail under extreme loading conditions.

Specification Summary & Compliance

This square washer features inch system dimensions with 0.285" ID, 1" width, and controlled thickness of 0.054-0.066" for precision fitment. Manufactured from zinc-plated steel with Rockwell B40 hardness rating, ensuring consistent mechanical properties and durability. The product fully complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards, including compliance with the latest SVHC requirements as of June 14, 2023. Designed specifically for use with 1/4" fasteners in industrial and construction applications requiring reliable load distribution and corrosion resistance.

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