Fastener Locknut - Flanged

Fastener Locknut - Flanged

This is a 5/16"-18 serrated flange locknut, a common fastener used across general concrete mixer applications. The built-in flange acts as an integrated washer to distribute the clamping load over a wider surface area, while the serrations bite into the mating surface to prevent loosening in high-vibration environments typical of mixer trucks. This nut is essential for routine maintenance and repairs, ensuring that components remain securely fastened. It is typically made from case-hardened or high-strength steel with a zinc finish for corrosion resistance.

Key Features

• Integrated flange distributes load and replaces a separate washer
• Serrated face provides a locking feature to resist vibration
• Coarse thread (18 TPI) for quick and secure fastening
• Steel construction, often case hardened or Grade 8, for high-strength applications
• Zinc finish for corrosion resistance in demanding environments

Fits These Mixers

McNeilus, Terex, Con-Tech. This is a general-use fastener for various concrete mixer truck systems, including those manufactured by Con-Tech, McNeilus, and Terex. It is commonly used in applications requiring a secure, vibration-resistant connection.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.