S-95647A170 3.7 mm ID x 8 mm OD Plastic Washers
Plastic 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 chemical resistance for reliable operation in harsh industrial environments where corrosion or chemical exposure is a concern
- Excellent dimensional stability with precise 3.7mm ID and 8mm OD metric sizing for consistent performance with M3.5 screws
- High mechanical strength with Rockwell M90 hardness rating to withstand vibration and maintain load distribution
- Low friction properties of Delrin® Acetal Plastic reduce wear on mating surfaces and extend component life
- Temperature resistance up to 180°F ensures reliable performance in various operating conditions
- Lightweight non-conductive material provides electrical insulation and reduces overall assembly weight
- Full regulatory compliance with RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
These Delrin® Acetal Plastic flat washers deliver exceptional engineering value in applications where metal washers would fail. The M3.5 metric sizing with precise 3.7mm internal diameter ensures perfect fit with standard screws, while the white acetal material provides inherent resistance to chemicals, solvents, and moisture that typically degrade other plastics. Engineers specify these flat washers for electrical equipment, food processing machinery, and automotive components where non-conductivity, low moisture absorption, and consistent performance at temperatures up to 180°F are critical. The material's natural lubricity reduces friction between surfaces, preventing galling and simplifying maintenance in repetitive assembly operations.
Specification Summary & Compliance
This metric flat washer features precise dimensions of 3.7mm ID × 8mm OD with thickness ranging 0.4-0.6mm, engineered for M3.5 screw size applications. Manufactured from Delrin® Acetal Plastic with Rockwell M90 hardness, the component maintains dimensional stability across its operating range. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial applications.
