S-93286A149 0.812" ID x 1.875" OD Oversized Washers

Oversized Washers

1248FA00509 Oversized Washers
1248FA00509 Oversized Washers

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

Part No.
Part No. 1248FA00509
Equivalent to mcmaster :
93286A149

Basic Information

System of Measurement Inch
Washer Type Flat

Dimension Parameters

ID 0.812"
OD 1.875"
Thickness 0.123-0.128"

Material & Strength Parameters

Material Aluminum
Hardness Brinell 32

Installation & Application Parameters

For Screw Size 3/4"

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 load distribution with 1.875" outer diameter to prevent surface damage and material embedment
  • Precision fit for 3/4" screws with 0.812" inner diameter ensuring secure fastening alignment
  • Excellent corrosion resistance through aluminum construction for long-lasting performance in harsh environments
  • Optimal mechanical strength with Brinell 32 hardness providing reliable durability under pressure
  • Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
  • Consistent dimensional accuracy with thickness maintained between 0.123-0.128" for uniform performance
  • Lightweight aluminum advantage reducing overall assembly weight without compromising strength

Professional Applications & Engineering Value

This aluminum flat washer delivers critical engineering solutions where weight reduction and corrosion resistance are paramount. The Brinell 32 hardness provides optimal balance between machinability and structural integrity, making it ideal for aerospace components, electrical enclosures, and marine hardware where traditional steel washers would introduce galvanic corrosion risks. The precise 0.812" ID ensures perfect alignment with 3/4" screws while the generous 1.875" OD distributes clamping force effectively across softer materials or painted surfaces. As an inch system flat washer, it meets North American manufacturing standards while the aluminum composition eliminates rust concerns in humid or chemical exposure environments, significantly extending maintenance intervals in industrial applications.

Specification Summary & Compliance

This flat washer maintains dimensional precision with inner diameter of 0.812", outer diameter of 1.875", and thickness tolerance of 0.123-0.128". Manufactured to inch system standards for 3/4" screw applications with material hardness of Brinell 32. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and unrestricted use across global markets, including adherence to the latest SVHC requirements updated June 14, 2023.

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