S-95395A370 0.906" ID x 1.75" OD Oversized Washers

Oversized Washers

1248FA00563 Oversized Washers
1248FA00563 Oversized Washers

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

Part No.
Part No. 1248FA00563
Equivalent to mcmaster :
95395A370

Basic Information

System of Measurement Inch
Washer Type Flat

Dimension Parameters

ID 0.906"
OD 1.75"
Thickness 0.230-0.255"

Material & Strength Parameters

Material Brass
Hardness Rockwell B60

Installation & Application Parameters

For Screw Size 7/8"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) compliant with exemption 6(c) - Lead in copper alloy
REACH REACH (EC 1907/2006) (01/17/2023, 233 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 from high-quality brass material, ideal for harsh environments and preventing fastener degradation
  • Excellent load distribution with precise 1.75" OD and 0.906" ID, reducing surface pressure and preventing material damage
  • Enhanced durability and wear resistance thanks to Rockwell B60 hardness, ensuring long service life under repeated stress
  • Perfect fit for 7/8" screws with accurate inner diameter, providing secure fastening and vibration resistance
  • Reliable thickness consistency (0.230-0.255") for uniform performance and predictable clamping force in assemblies
  • Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industrial applications
  • Broad industrial compatibility with inch measurement system, making it suitable for North American machinery and equipment

Professional Applications & Engineering Value

This brass flat washer delivers exceptional engineering value in applications where corrosion resistance and electrical conductivity are critical. The copper alloy construction prevents rust formation in marine, plumbing, and electrical systems, while the Rockwell B60 hardness maintains structural integrity under mechanical loads. Its precise 0.906" ID ensures perfect alignment with 7/8" screws, preventing loosening from vibration in heavy machinery, automotive, and industrial equipment. The generous 1.75" OD provides superior surface coverage, protecting soft materials and distributing clamp load effectively. As a RoHS 3 compliant component with lead exemption for copper alloys, it meets the strictest environmental standards without compromising performance.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.906" inner diameter, 1.75" outer diameter, and 0.230-0.255" thickness range for precise fit with 7/8" fasteners. Manufactured from brass with Rockwell B60 hardness rating, it complies with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloys and REACH (EC 1907/2006) regulations (updated January 17, 2023, 233 SVHC). The combination of material properties and dimensional accuracy ensures reliable performance in industrial fastening applications requiring corrosion resistance and durability.

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