S-93852A110 1.062" ID x 2.5" OD ASME B18.21.1 USS Washers

USS Washers

1253FA00088 USS Washers
1253FA00088 USS Washers

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Part No.
Part No. 1253FA00088
Equivalent to mcmaster :
93852A110

Basic Information

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

Dimension Parameters

ID 1.062"
OD 2.5"
Thickness 0.136-0.192"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Rockwell B68

Installation & Application Parameters

For Screw Size 1"

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

  • Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications
  • Exceptional load distribution due to USS flat design with 2.5" OD, preventing surface damage and maintaining joint integrity
  • Optimized hardness performance with Rockwell B68 rating, ensuring long-term durability and resistance to deformation under pressure
  • Precise fit for 1" screws with 1.062" ID, providing secure fastening and reducing installation time
  • Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing dimensional accuracy and reliable performance
  • Environmentally responsible manufacturing with full RoHS 3 and REACH compliance, meeting global regulatory requirements
  • Versatile thickness range from 0.136" to 0.192", accommodating various assembly needs and compensating for minor tolerances

Professional Applications & Engineering Value

This USS flat washer in 18-8 stainless steel delivers critical engineering solutions for industrial applications where corrosion resistance and structural reliability are paramount. The flat washer design effectively distributes clamping force over a larger surface area, preventing bolt head embedment and protecting soft materials in machinery, construction, and marine equipment. With its Rockwell B68 hardness, it maintains dimensional stability under heavy loads and vibration, reducing maintenance frequency in heavy-duty washers applications. The inch system measurement ensures compatibility with standard US fasteners, while the corrosion-resistant properties make it suitable for chemical processing, food manufacturing, and outdoor infrastructure where moisture and chemicals are present.

Specification Summary & Compliance

This washer meets ASME B18.21.1 dimensional standards with an inner diameter of 1.062", outer diameter of 2.5", and thickness ranging from 0.136" to 0.192". Manufactured from 18-8 stainless steel with Rockwell B68 hardness, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence for global industrial use.

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