S-92217A420 0.156" ID x 0.312" OD ASME B18.21.1 ASME Washers

ASME Washers

1252FA00117 ASME Washers
1252FA00117 ASME Washers

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

Part No.
Part No. 1252FA00117
Equivalent to mcmaster :
92217A420

Basic Information

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

Dimension Parameters

ID 0.156"
OD 0.312"
Thickness 0.028-0.036"

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size No. 6

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2022, 223 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 18-8 Stainless Steel ensures long-term reliability in harsh or humid environments.
  • Precise dimensional fit with 0.156" ID and 0.312" OD provides consistent performance for No. 6 screw assemblies.
  • Enhanced load distribution across a wider surface area helps prevent surface damage and loosening under vibration.
  • Compliance with ASME B18.21.1 standard guarantees interchangeability and reliable mechanical performance.
  • RoHS 3 and REACH compliance ensures environmental safety and unrestricted use in regulated markets.
  • Durable material construction offers excellent strength and resistance to wear in repetitive industrial applications.
  • Versatile application range suitable for various assemblies requiring a flat, corrosion-resistant sealing surface.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Flat Washer is engineered to address common industrial challenges such as galvanic corrosion, fastener embedment, and joint failure. Its corrosion-resistant properties make it ideal for outdoor equipment, marine hardware, food processing machinery, and chemical processing plants where moisture and corrosive agents are prevalent. The precise 0.156" ID and 0.312" OD dimensions ensure a perfect fit for No. 6 screw sizes, maintaining uniform clamp load and preventing stress concentration. By conforming to ASME B18.21.1, these washers deliver consistent performance in high-vibration environments, reducing maintenance needs and extending the service life of your mechanical assemblies.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.156", outer diameter of 0.312", and thickness ranging from 0.028" to 0.036". It is manufactured from 18-8 Stainless Steel and designed for use with No. 6 screw sizes. The product conforms to the ASME B18.21.1 standard for dimensional and mechanical requirements. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial applications.

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