S-90438A150 M8 JIS B 1190 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the integrated flange design that eliminates the need for separate washers and distributes load evenly
• Enhanced corrosion protection with zinc plating that provides a durable barrier against rust in demanding industrial environments
• High-strength performance with Class 8 rating ensuring reliable clamping force and resistance to loosening under heavy loads
• Easy installation and removal using standard 12mm wrenches thanks to the external hex drive design
• Secure thread engagement with coarse 1.25mm pitch threads that resist cross-threading and provide quick assembly
• Precision manufacturing to JIS B 1190 standards guaranteeing consistent quality and dimensional accuracy across all components
• Environmental compliance meeting RoHS 3 and REACH regulations for safe use in various industrial applications

Professional Applications & Engineering Value

This M8 flange nut delivers exceptional engineering value in applications where vibration resistance and structural integrity are critical. The zinc-plated steel construction provides excellent corrosion protection for outdoor equipment, automotive assemblies, and machinery exposed to harsh environments. The integrated 17.5mm flange acts as a built-in washer, distributing clamping force over a wider surface area to prevent damage to connected materials and maintain joint integrity. The coarse thread spacing (1.25mm pitch) ensures rapid installation while resisting loosening from vibration, making it ideal for industrial equipment, construction machinery, and transportation applications where reliability is paramount. Manufactured to JIS B 1190 standard with Class 6H thread fit, this nut maintains precise dimensional consistency for trouble-free assembly operations.

Specification Summary & Compliance

This metric flange nut features M8 x 1.25mm coarse threads with Class 6H thread fit tolerance, ensuring precise engagement with mating components. The external hex drive (12mm width) and 8mm height provide standard tool compatibility. Manufacturing complies with JIS B 1190 specifications, with flange dimensions of 17.5mm diameter and 1.1mm thickness. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, confirming its suitability for regulated industrial applications while maintaining Class 8 strength classification for heavy-duty performance.