S-91950A029 0.281" ID x 0.625" OD SAE Washers

SAE Washers

1251FA00161 SAE Washers
1251FA00161 SAE Washers

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

Part No.
Part No. 1251FA00161
Equivalent to mcmaster :
91950A029

Basic Information

System of Measurement Inch
Washer Type Flat
Washer Designation SAE

Dimension Parameters

ID 0.281"
OD 0.625"
Thickness 0.051-0.080"

Material & Strength Parameters

Material 316 Stainless Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size 1/4"

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

  • Exceptional corrosion resistance from 316 stainless steel construction, ideal for harsh chemical and marine environments
  • Precise dimensional compatibility with 1/4" fasteners, ensuring reliable load distribution and secure assemblies
  • SAE inch-system standardization guarantees consistent performance and interchangeability in North American applications
  • Durable material integrity maintains washer functionality under continuous industrial stress without degradation
  • Regulatory compliance assurance with RoHS 3 and REACH standards for global supply chain integration
  • Optimized thickness range (0.051-0.080") provides flexibility for varying gasket and spacing requirements
  • Reliable surface protection prevents galvanic corrosion when paired with compatible stainless steel fasteners

Professional Applications & Engineering Value

These 316 stainless steel SAE flat washers deliver critical engineering value in corrosive operating environments where standard fasteners fail. The marine-grade 316 composition provides superior resistance to chlorides, acids, and industrial chemicals, solving premature failure issues in chemical processing, marine hardware, and food processing equipment. The precise SAE inch dimensions (0.281" ID x 0.625" OD) ensure perfect compatibility with 1/4" screw applications, distributing clamp load effectively to prevent surface damage and maintain joint integrity. With controlled thickness variations, these flat washers accommodate minor tolerance stack-ups while the RoHS and REACH compliance eliminates regulatory barriers in international projects and sensitive applications.

Specification Summary & Compliance

Manufactured to SAE flat washer standards with precise inch-system dimensions: 0.281" internal diameter, 0.625" outer diameter, and thickness ranging 0.051-0.080". These washers comply with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical substances. The 316 stainless steel construction provides inherent corrosion resistance without additional surface treatments, making these components suitable for demanding industrial applications requiring material traceability and regulatory compliance.

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