S-98370A112 0.5" ID x 1.25" OD Oversized Washers

Oversized Washers

1248FA00726 Oversized Washers
1248FA00726 Oversized Washers

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

Part No.
Part No. 1248FA00726
Equivalent to mcmaster :
98370A112

Basic Information

System of Measurement Inch
Washer Type Flat

Dimension Parameters

ID 0.5"
OD 1.25"
Thickness 0.110-0.140"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Rockwell B68

Installation & Application Parameters

For Screw Size 7/16"

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 environments and long-term reliability.
  • Excellent load distribution due to the 1.25" outer diameter, preventing surface damage and joint loosening.
  • Precise fit for 7/16" screws with a 0.5" inner diameter, ensuring secure fastening and reduced assembly time.
  • Enhanced durability from Rockwell B68 hardness, offering consistent performance under mechanical stress.
  • Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe, sustainable use.
  • Versatile thickness range (0.110-0.140") allowing for slight variations to accommodate different application needs.
  • Reliable in heavy-duty applications thanks to robust material and dimensional stability in inch system measurements.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as corrosion-induced failure and uneven load distribution in mechanical assemblies. Its high corrosion resistance makes it suitable for outdoor, marine, and chemical processing environments, reducing maintenance costs and downtime. The precise 0.5" ID and 1.25" OD dimensions ensure optimal performance with 7/16" screw sizes, providing a secure fit that minimizes vibration loosening and distributes pressure evenly across surfaces. Ideal for applications in construction, automotive, and machinery, this washer enhances joint integrity and extends the lifespan of fastened components, supporting efficient B2B procurement for reliable, long-term projects.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an inner diameter of 0.5", outer diameter of 1.25", and thickness ranging from 0.110" to 0.140", designed for use with 7/16" screws. It meets industry standards for material quality, including a hardness of Rockwell B68, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory conformity in industrial applications.

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