S-90126A041 1.5" ID x 2.75" OD ASME B18.21.1 SAE Washers

SAE Washers

1251FA00018 SAE Washers
1251FA00018 SAE Washers

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

Part No.
Part No. 1251FA00018
Equivalent to mcmaster :
90126A041

Basic Information

System of Measurement Inch
Washer Type Flat
Washer Designation SAE
Specifications Met ASME B18.21.1

Dimension Parameters

ID 1.5"
OD 2.75"
Thickness 0.136-0.192"

Material & Strength Parameters

Material Zinc-Plated Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size 1 3/8"

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
  • Precise dimensional accuracy with 1.5" ID and 2.75" OD ensures perfect fit for 1 3/8" screw applications
  • Superior load distribution across wider surface area reduces point stress and prevents surface damage
  • Compliance with ASME B18.21.1 standards guarantees consistent quality and mechanical reliability
  • Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable operations
  • Optimized thickness range (0.136-0.192") provides reliable spacing and vibration resistance
  • Versatile SAE flat washer design suitable for various industrial assembly and maintenance applications

Professional Applications & Engineering Value

This zinc-plated steel SAE flat washer delivers exceptional engineering value through its robust material composition and precise dimensional specifications. The zinc plating provides critical corrosion protection in humid or chemically aggressive environments, while the 1.5" ID x 2.75" OD configuration ensures optimal load distribution for 1 3/8" screw applications. Engineered to ASME B18.21.1 standards, these industrial washers prevent fastener loosening under vibration and reduce surface damage in heavy machinery, automotive assemblies, and structural steel connections. The controlled thickness variation maintains consistent clamping force, making them ideal for precision mechanical systems requiring reliable spacing and surface protection.

Specification Summary & Compliance

This SAE flat washer features precise inch dimensions with 1.5" inner diameter, 2.75" outer diameter, and thickness ranging from 0.136" to 0.192". Manufactured according to ASME B18.21.1 specifications for dimensional accuracy and mechanical properties. The product is fully compliant 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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