S-91755A312 0.126" ID x 0.354" OD Self-Retaining Washers
Self-Retaining Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Secure vibration-resistant locking with self-retaining design that maintains position during assembly and operation
- Excellent chemical and corrosion resistance thanks to durable nylon plastic construction
- Reliable performance across extreme temperatures from -40°F to 180°F (-40°C to 82°C)
- Consistent dimensional stability with Rockwell R120 hardness rating for long-term reliability
- Dual compatibility with both No. 4 (inch) and M3 (metric) screw sizes for versatile applications
- Environmentally compliant manufacturing meeting RoHS 3 standards for global use
- Easy visual inspection with off-white color for quick identification and quality control
Professional Applications & Engineering Value
This nylon self-retaining washer addresses critical industrial challenges where vibration loosening and chemical exposure compromise fastener integrity. The engineering-grade nylon plastic construction provides excellent electrical insulation and corrosion resistance, making it ideal for electrical enclosures, automotive assemblies, and machinery where metal washers would cause galvanic corrosion. The self-retaining feature ensures proper positioning during automated assembly processes, reducing installation time and preventing misalignment issues. With dual compatibility for both No. 4 and M3 screw sizes, this washer simplifies inventory management for operations using mixed measurement systems while maintaining consistent performance across diverse industrial environments.
Specification Summary & Compliance
Precision-engineered with 0.126" ID and 0.354" OD dimensions with thickness tolerance of 0.053-0.065". Manufactured from nylon plastic with Rockwell R120 hardness rating and temperature range of -40°F to 180°F. Compliant with RoHS 3 (2015/863/EU) environmental standards and suitable for use in both inch and metric fastener systems. The self-retaining design maintains consistent positioning while providing reliable vibration resistance in demanding industrial applications.
