S-90231A127 0.938" ID x 1.75" OD SAE Washers

SAE Washers

1251FA00079 SAE Washers
1251FA00079 SAE Washers

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

Part No.
Part No. 1251FA00079
Equivalent to mcmaster :
90231A127

Basic Information

System of Measurement Inch
Washer Type Flat
Washer Designation SAE

Dimension Parameters

ID 0.938"
OD 1.75"
Thickness 0.108-0.160"

Material & Strength Parameters

Material Brass
Hardness Not Rated

Installation & Application Parameters

For Screw Size 7/8"

Finish & Compliance Parameters

REACH REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant
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Key Features & Benefits at a Glance

  • Superior corrosion resistance thanks to durable brass construction, ideal for harsh industrial environments and moisture-prone applications
  • Excellent load distribution with precise 0.938" ID and 1.75" OD dimensions, preventing surface damage and maintaining joint integrity
  • Reliable sealing performance for 7/8" screws, reducing leakage risks in fluid and gas systems
  • Consistent thickness control (0.108-0.160") ensures uniform pressure application and vibration resistance
  • Full REACH compliance guarantees safe use in regulated industries and global market acceptance
  • SAE standard compatibility provides seamless integration with existing inch-based fastener systems
  • Non-sparking properties of brass enhance safety in flammable or explosive environments

Professional Applications & Engineering Value

This brass SAE flat washer delivers critical engineering solutions where corrosion resistance and reliable sealing are paramount. The brass material inherently resists galvanic corrosion and chemical degradation, making it ideal for marine equipment, plumbing systems, and electrical enclosures exposed to moisture. With its SAE inch dimensions (0.938" ID x 1.75" OD), it provides optimal bearing surface for 7/8" screws, distributing clamp load effectively to prevent material deformation in soft substrates. The controlled thickness range (0.108-0.160") ensures consistent performance in vibration-prone assemblies, while the non-magnetic properties make it suitable for sensitive instrumentation and electronic applications.

Specification Summary & Compliance

Manufactured to SAE standards with inch system measurements. Dimensions include 0.938" internal diameter, 1.75" outer diameter, and thickness ranging 0.108-0.160" for compatibility with 7/8" screw sizes. Material specification: Brass. Fully compliant with REACH (EC 1907/2006) regulations as of 06/14/2023, containing no SVHC above threshold limits. Suitable for industrial applications requiring corrosion-resistant flat washers with consistent dimensional accuracy.

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