S-98180A170 0.812" ID x 1.469" OD SAE Washers

SAE Washers

1251FA00335 SAE Washers
1251FA00335 SAE Washers

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

Part No.
Part No. 1251FA00335
Equivalent to mcmaster :
98180A170

Basic Information

System of Measurement Inch
Washer Type Flat
Washer Designation SAE

Dimension Parameters

ID 0.812"
OD 1.469"
Thickness 0.122-0.177"

Material & Strength Parameters

Material Zinc-Flake Coated Steel
Hardness Rockwell C38
Fastener Strength Grade/Class Grade 8

Installation & Application Parameters

For Screw Size 3/4"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/10/2022, 224 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Exceptional load distribution with 0.122-0.177" thickness to prevent surface damage and maintain joint integrity under high stress.
  • Superior corrosion resistance provided by zinc-flake coating, ensuring long-term performance in harsh industrial environments.
  • High-strength durability with Rockwell C38 hardness and Grade 8 classification for reliable use in heavy-duty applications.
  • Precise dimensional fit with 0.812" ID and 1.469" OD, designed for accurate 3/4" screw fastening per SAE standards.
  • Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe, environmentally responsible industrial use.
  • Enhanced fastener system reliability through consistent flat washer performance, reducing maintenance and replacement costs.

Professional Applications & Engineering Value

This SAE flat washer is engineered to address critical challenges in industrial fastening systems, where uneven load distribution and corrosion can lead to joint failure. The zinc-flake coated steel construction provides a robust barrier against moisture and chemicals, extending service life in demanding environments like machinery assembly, structural frameworks, and automotive components. With its Grade 8 strength and precise dimensions (0.812" ID x 1.469" OD), it ensures secure seating for 3/4" screws, minimizing loosening and distributing clamping forces evenly to protect connected surfaces. This makes it ideal for applications requiring reliable, high-performance fastener solutions that adhere to SAE standards, reducing downtime and enhancing operational safety.

Specification Summary & Compliance

This washer conforms to SAE standards with precise dimensions: Inner Diameter of 0.812", Outer Diameter of 1.469", and Thickness ranging from 0.122" to 0.177". It is manufactured from zinc-flake coated steel with a hardness of Rockwell C38 and meets Grade 8 strength requirements for heavy-duty use. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring adherence to environmental and safety regulations for industrial applications.

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