S-9311K117 0.46" ID x 0.81" OD Ribbed Vibration-Damping Washers
Ribbed Vibration-Damping Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
Included Accessories Parameters
Drive & Structure Parameters
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Key Features & Benefits at a Glance
- Superior vibration dampening from the ribbed plastic/rubber blend design, reducing equipment wear and noise in industrial settings
- Excellent load distribution with 10 lbs capacity per mount, preventing surface damage and maintaining assembly integrity
- Secure press-fit mounting ensures easy installation and reliable retention without additional fasteners
- Wide temperature resistance (-20° to 160° F) maintains performance across various operating environments
- Medium hardness (Durometer 57A) provides optimal balance between flexibility and durability for long service life
- Environmental compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries
- Precise 7/16" screw compatibility with 0.46" ID and 0.81" OD dimensions for accurate fit and function
Professional Applications & Engineering Value
This ribbed washer combines the flexibility of plastic/rubber blend material with structural ribbed texture to solve critical industrial challenges. The unique design absorbs mechanical vibrations that can loosen assemblies over time, while the medium hardness rating (Durometer 57A) provides consistent performance under compression. Ideal for press-fit mounting applications in machinery, automotive, and electronic enclosures, it prevents metal-to-metal contact and distributes loads evenly across surfaces. The black ribbed washer maintains its properties across a broad temperature range (-20° to 160° F), making it suitable for both indoor and outdoor equipment where thermal stability is essential for reliable operation.
Specification Summary & Compliance
This washer features precise dimensional specifications with 0.46" inner diameter, 0.81" outer diameter, and 0.25" thickness, engineered for 7/16" screw size applications. The plastic/rubber blend construction delivers consistent performance with 10 lbs capacity per mount and 0.5 lbs shear capacity. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for industrial use. The medium hardness rating (Durometer 57A) provides reliable deflection characteristics of 0.05" at capacity and 0.04" at shear capacity.
