S-96659A138 0.594" ID x 1.156" OD ASME B18.21.1 SAE Washers

SAE Washers

1251FA00289 SAE Washers
1251FA00289 SAE Washers

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

Part No.
Part No. 1251FA00289
Equivalent to mcmaster :
96659A138

Basic Information

System of Measurement Inch
Washer Type Flat
Washer Designation SAE
Specifications Met ASME B18.21.1

Dimension Parameters

ID 0.594"
OD 1.156"
Thickness 0.074-0.121"

Material & Strength Parameters

Material Black-Oxide 18-8 Stainless Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size 9/16"

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 Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
  • Precise dimensional fit with 0.594" ID and 1.156" OD, ensuring reliable alignment and load distribution
  • Optimized thickness range (0.074-0.121") for consistent performance and vibration resistance in heavy-duty applications
  • Full compliance with ASME B18.21.1 standards, guaranteeing interchangeability and engineering reliability
  • Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements
  • Durable surface treatment that maintains integrity under high-stress conditions without compromising corrosion protection
  • Universal compatibility with 9/16" fasteners in inch-system assemblies across various industrial sectors

Professional Applications & Engineering Value

This SAE flat washer delivers critical engineering solutions where corrosion resistance and dimensional precision are paramount. The Black-Oxide 18-8 Stainless Steel construction provides exceptional protection against rust and chemical degradation, making it ideal for outdoor equipment, marine applications, and chemical processing facilities. The precise 0.594" ID and 1.156" OD dimensions ensure perfect fit with 9/16" fasteners, preventing bolt loosening and distributing loads evenly across connected surfaces. With controlled thickness tolerances (0.074-0.121"), this washer maintains consistent performance in high-vibration environments, reducing maintenance frequency and extending equipment service life. The ASME B18.21.1 compliance guarantees reliable performance in demanding industrial assemblies where standardization is critical for safety and interoperability.

Specification Summary & Compliance

This flat washer features standard inch system dimensions with 0.594" inner diameter and 1.156" outer diameter, engineered for 9/16" screw sizes. The thickness range of 0.074-0.121" ensures precise fitment in various applications. Manufacturing and dimensional specifications strictly adhere to ASME B18.21.1 standards for flat washers. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical substances, meeting the latest compliance requirements as of June 14, 2023.

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