S-90718A190 8.4 mm ID x 17 mm OD UL 94 HB Plastic Washers

Key Features & Benefits at a Glance

• Superior strength and dimensional stability from glass-filled nylon construction, preventing deformation under load
• Excellent electrical insulation properties for safe use in electrical assemblies and sensitive electronic equipment
• Reliable flame resistance with UL 94 HB certification, reducing fire hazards in industrial environments
• Wide temperature tolerance maintaining performance from -40°F to 220°F (-40°C to 104°C)
• Chemical and corrosion resistance ideal for harsh environments where metal washers would degrade
• Precision M8 compatibility with 8.4mm ID and 17mm OD ensuring perfect fit and even load distribution
• Full regulatory compliance meeting RoHS 3, REACH, and UL standards for global market acceptance

Professional Applications & Engineering Value

This glass-filled nylon flat washer delivers critical engineering advantages where electrical insulation, chemical resistance, and weight reduction are paramount. The M8 metric sizing with precise 8.4mm inner diameter and 17mm outer diameter ensures optimal load distribution while preventing bolt head or nut embedding. The white glass-filled nylon material provides excellent dimensional stability and Rockwell M111 hardness, resisting cracking and deformation in high-vibration applications. These UL 94 HB certified washers are particularly valuable in electrical enclosures, automotive assemblies, and food processing equipment where non-conductive, corrosion-resistant components are essential for safety and longevity.

Specification Summary & Compliance

Precision-engineered to metric standards with 8.4mm ID × 17mm OD for M8 screw applications. Manufactured from glass-filled nylon plastic with Rockwell M111 hardness rating. Certified to UL 94 HB flammability standards and compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. Temperature rating: -40°F to 220°F (-40°C to 104°C).