S-90313A268 0.938" ID x 2.5" OD Oversized Washers

Oversized Washers

1248FA00079 Oversized Washers
1248FA00079 Oversized Washers

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

Part No.
Part No. 1248FA00079
Equivalent to mcmaster :
90313A268

Basic Information

System of Measurement Inch
Washer Type Flat

Dimension Parameters

ID 0.938"
OD 2.5"
Thickness 0.122-0.145"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size 7/8"

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
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
  • Precise dimensional fit with 0.938" ID and 2.5" OD, ensuring secure seating and even load distribution for 7/8" screws.
  • Durable mechanical performance from a thickness range of 0.122-0.145", providing consistent spacing and vibration resistance.
  • Broad industrial compatibility in inch measurement system, facilitating easy integration into existing machinery and assemblies.
  • Environmental and regulatory safety with full RoHS 3 and REACH compliance, supporting sustainable and responsible manufacturing practices.
  • Reliable surface protection for connected components, reducing wear and extending equipment service life.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address critical challenges in industrial settings, such as corrosion from moisture, chemicals, and outdoor exposure. Its robust inch-sized dimensions (0.938" ID x 2.5" OD) and flat design ensure uniform pressure distribution, preventing loosening under vibration and heavy loads in mechanical assemblies, construction projects, and machinery maintenance. By utilizing stainless steel material, it offers exceptional durability and corrosion resistance, making it a dependable choice for applications requiring long-term performance without frequent replacements, thereby reducing downtime and maintenance costs.

Specification Summary & Compliance

This flat washer adheres to standard inch system measurements with an inner diameter of 0.938", outer diameter of 2.5", and thickness ranging from 0.122" to 0.145", designed specifically for 7/8" screw size applications. It conforms to industry manufacturing practices for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for hazardous substance restrictions.

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