S-91717A200 0.344" ID x 0.875" OD Clipped Washers

Clipped Washers

1286FA00042 Clipped Washers
1286FA00042 Clipped Washers

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

Part No.
Part No. 1286FA00042
Equivalent to mcmaster :
91717A200

Basic Information

System of Measurement Inch
Washer Type Clipped

Dimension Parameters

ID 0.344"
OD 0.875"
Thickness 0.056-0.071"

Material & Strength Parameters

Material Black-Oxide Steel
Hardness Rockwell B40

Installation & Application Parameters

For Screw Size 5/16"

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant

Geometric Parameters

Clipped Width 0.74"
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 steel finish, extending service life in harsh industrial environments
  • Precision-engineered clipped design with 0.74" width for secure positioning and faster installation on 5/16" screws
  • Optimized load distribution through 0.875" OD and controlled 0.056-0.071" thickness range
  • Enhanced mechanical durability with Rockwell B40 hardness rating for reliable performance under stress
  • Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
  • Accurate dimensional fit with 0.344" ID ensuring proper alignment with standard 5/16" fasteners
  • Inch-system compatibility for seamless integration with North American industrial equipment and specifications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this black-oxide steel clipped washer provides critical corrosion protection where moisture and chemicals threaten fastener integrity. The clipped design enables rapid installation in high-volume assembly operations while maintaining precise positioning on 5/16" fasteners. With its Rockwell B40 hardness and controlled thickness tolerance, the washer delivers consistent load distribution in heavy machinery, automotive systems, and structural applications. The combination of inch system dimensions and corrosion-resistant properties makes it ideal for maintenance, repair, and OEM operations requiring durable, compliant fastening solutions that withstand industrial wear while meeting international environmental standards.

Specification Summary & Compliance

This clipped washer features precision inch-system dimensions including 0.344" ID, 0.875" OD, and thickness range of 0.056-0.071" with 0.74" clipped width, engineered for 5/16" screw applications. Manufactured from black-oxide steel with Rockwell B40 hardness for consistent mechanical performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial fastener applications.

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