S-98900A322 1.875" ID x 3.375" OD Oversized Washers

Oversized Washers

1248FA00737 Oversized Washers
1248FA00737 Oversized Washers

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

Part No.
Part No. 1248FA00737
Equivalent to mcmaster :
98900A322

Basic Information

System of Measurement Inch
Washer Type Flat

Dimension Parameters

ID 1.875"
OD 3.375"
Thickness 0.235-0.265"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Rockwell B83

Installation & Application Parameters

For Screw Size 1 3/4"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
  • Enhanced load distribution due to large 3.375" OD, reducing surface pressure and preventing material damage.
  • Precise fit and alignment with 1.875" ID designed specifically for 1 3/4" screw sizes, ensuring secure fastening.
  • Exceptional durability and wear resistance from Rockwell B83 hardness, extending service life under heavy loads.
  • Consistent performance with controlled thickness (0.235-0.265"), providing reliable spacing and vibration resistance.
  • Compliance with strict environmental regulations, being RoHS 3 and REACH compliant for safe, sustainable use.
  • Versatile inch system compatibility, making it easy to integrate into existing industrial assemblies and maintenance.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address critical challenges in demanding applications such as heavy machinery, structural frameworks, and marine equipment. Its corrosion-resistant material prevents rust and degradation, even in moist or chemically aggressive settings, reducing maintenance costs and downtime. The precise 1.875" ID and 3.375" OD ensure optimal load spreading, minimizing stress concentrations that can lead to joint failure. Combined with Rockwell B83 hardness, it withstands high-pressure and repetitive vibrations, making it a reliable choice for industrial washers in construction, automotive, and manufacturing sectors where safety and longevity are paramount.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an inner diameter of 1.875", outer diameter of 3.375", and thickness ranging from 0.235" to 0.265". It is manufactured from 18-8 stainless steel with a hardness of Rockwell B83, ensuring dimensional accuracy and mechanical integrity. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial applications without hazardous substances.

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