S-90940A104 6.8 mm ID x 17 mm OD DIN 7349 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional clarity for visual inspection and aesthetic applications without compromising structural integrity
• Superior temperature resistance maintains performance in environments ranging from -40°F to 220°F
• High-impact durability with Rockwell R120 hardness for reliable load distribution and vibration resistance
• Precision dimensional fit with 6.8mm ID specifically engineered for M6 screw compatibility
• Regulatory compliance assurance with full RoHS 3 and REACH certification for global industrial use
• Standardized performance meeting DIN 7349 specifications for consistent quality and interchangeability
• Chemical-resistant polycarbonate construction prevents degradation in harsh operating conditions

Professional Applications & Engineering Value

These clear polycarbonate flat washers provide critical engineering solutions where visual monitoring, electrical insulation, and chemical resistance are paramount. The M6 metric sizing combined with DIN 7349 certification ensures perfect compatibility with standard fastener systems while the polycarbonate material offers excellent impact strength where metal washers might cause galvanic corrosion or electrical conduction issues. Particularly valuable in electronic enclosures, medical devices, and food processing equipment, these washers maintain dimensional stability across extreme temperature fluctuations from -40°F to 220°F, preventing thermal expansion-related loosening in precision assemblies.

Specification Summary & Compliance

Manufactured to DIN 7349 standards with precise dimensions: 6.8mm ID, 17mm OD, and 2.7-3.3mm thickness. The polycarbonate construction delivers Rockwell R120 hardness for consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted international trade. Temperature rating certified for continuous operation between -40°F and 220°F.