S-91755A156 0.277" ID x 0.453" 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
- Superior temperature resistance maintains performance from -40°F to 180°F, ideal for harsh environments
- Self-retaining design ensures secure positioning during assembly, reducing installation time and errors
- Rockwell R120 hardness provides excellent dimensional stability and resistance to wear
- Corrosion-resistant nylon construction eliminates rust and chemical degradation in demanding applications
- RoHS 3 compliance meets strict environmental standards for safe, sustainable manufacturing
- Dual-standard compatibility fits both No. 10 (inch) and M5 (metric) screws for versatile global use
- Precision dimensional control with 0.277" ID and 0.453" OD ensures consistent fit and reliable performance
Professional Applications & Engineering Value
This nylon self-retaining washer delivers critical engineering advantages in applications where metal fasteners fail. The high-temperature resistant nylon plastic construction prevents galvanic corrosion when used with dissimilar metals, while the self-retaining feature solves assembly challenges in vibration-prone environments like automotive, electronics, and machinery. With Rockwell R120 hardness, it maintains dimensional integrity under load, preventing deformation that compromises seal integrity. The broad temperature range from -40°F to 180°F makes it suitable for outdoor equipment, HVAC systems, and industrial controls where thermal cycling occurs. Its dual compatibility with both No. 10 and M5 screw sizes provides flexibility for global manufacturing standards.
Specification Summary & Compliance
Manufactured to precise dimensional standards with 0.277" inner diameter, 0.453" outer diameter, and thickness ranging 0.052-0.072". The nylon plastic construction meets Rockwell R120 hardness specifications for consistent performance. Compliant with RoHS 3 (2015/863/EU) environmental directives, ensuring hazardous substance restriction adherence. Suitable for use in both inch and metric fastener systems, providing reliable performance across international engineering standards.
