S-99908A107 M20 DIN 6926 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision-engineered nylon insert that maintains locking force under dynamic loads
• Enhanced corrosion protection with zinc yellow-chromate plating for extended service life in harsh industrial environments
• Heavy-duty performance with Class 10 strength rating ensuring reliable fastening in high-stress applications
• Integrated flange design eliminates need for separate washers, providing larger bearing surface and simplified installation
• High-temperature capability with nylon insert rated to 250°F (121°C) for thermal cycling applications
• Precision thread engagement with Class 6H thread fit ensuring consistent torque values and secure fastening
• Industry-standard compliance meeting DIN 6926 specifications for guaranteed dimensional accuracy and performance

Professional Applications & Engineering Value

This M20 nylon insert flange lock nut delivers exceptional engineering value by solving critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural applications. The combination of zinc yellow-chromate plated steel construction and precision metric coarse threading (M20x2.5mm) ensures reliable performance in corrosive environments while facilitating quick installation. The integrated 42.8mm flange diameter distributes clamping force evenly, preventing surface damage and maintaining joint integrity. Engineered for heavy-duty applications requiring sustained locking performance, this fastener maintains its vibration-resistant properties through the nylon insert's resilience, making it ideal for equipment subject to constant motion, thermal expansion, and mechanical stress where traditional nuts would fail.

Specification Summary & Compliance

This flange lock nut features M20x2.5mm metric coarse threads with Class 6H thread fit tolerance for precise engagement. Manufactured to DIN 6926 specifications with Class 10 strength rating, ensuring dimensional accuracy and mechanical performance. The external hex drive (30mm width) provides standard tool compatibility while the 42.8mm flange diameter and 3mm flange thickness meet industrial standards. The nylon insert maintains locking performance up to 250°F, with right-hand thread direction conforming to international metric standards. Compliant with RoHS and REACH environmental directives for industrial use.