S-92140A126 1.062" ID x 2.5" OD Oversized Washers

Oversized Washers

1248FA00458 Oversized Washers
1248FA00458 Oversized Washers

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

Part No.
Part No. 1248FA00458
Equivalent to mcmaster :
92140A126

Basic Information

System of Measurement Inch
Washer Type Flat

Dimension Parameters

ID 1.062"
OD 2.5"
Thickness 0.240-0.260"

Material & Strength Parameters

Material Black-Oxide Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size 1"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) compliant with exemption 6(a) - Lead as an alloying element in steel
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Enhanced load distribution with 2.5" outer diameter to prevent surface damage and material embedment
  • Superior corrosion resistance through black-oxide steel construction for extended service life in demanding environments
  • Precise compatibility with 1" screw sizes thanks to 1.062" inner diameter for secure fastening applications
  • Optimal thickness control between 0.240-0.260" ensures consistent performance and vibration resistance
  • Regulatory compliance assurance with RoHS 3 and REACH standards for global industrial applications
  • Heavy-duty mechanical performance from inch-system steel construction suitable for high-stress assemblies
  • Reduced galvanic corrosion risk through black-oxide surface treatment when paired with compatible fasteners

Professional Applications & Engineering Value

These black-oxide steel flat washers deliver critical engineering solutions for industrial equipment, structural assemblies, and heavy machinery applications. The 2.5" OD provides substantial bearing surface to distribute clamping forces effectively, preventing joint loosening under vibration and reducing stress concentration on softer materials. The black-oxide coating offers superior corrosion protection compared to plain steel, extending service life in moderately corrosive environments while maintaining dimensional stability. Engineered specifically for 1" screw applications, these inch-system washers ensure proper fitment in American standard assemblies. The controlled 0.240-0.260" thickness maintains consistent compression characteristics across multiple fastening points, making them ideal for industrial washers applications requiring uniform load distribution in construction, manufacturing, and heavy equipment maintenance.

Specification Summary & Compliance

This flat washer features inch-system dimensions with 1.062" inner diameter, 2.5" outer diameter, and 0.240-0.260" thickness range. Manufactured from black-oxide steel for corrosion resistance, these washers are designed for use with 1" screw sizes. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) compliant as of 01/17/2023, meeting current environmental regulations for industrial components.

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