Fastener Jam Nut

Fastener Jam Nut

This is a 5/8-11 Keps lock nut, also known as a K-lock nut. It consists of a standard hex nut combined with an external tooth lock washer that spins freely but is permanently attached. This integrated design simplifies and speeds up assembly by eliminating the need to handle a separate washer. These nuts are commonly used across general concrete mixer applications to secure components that are subject to constant vibration, ensuring that bolted joints remain tight. This part is essential for routine maintenance and repairs on various mixer truck assemblies.

Key Features

• Integrated external tooth lock washer for vibration resistance
• Pre-assembled design for faster and easier installation
• Thread Size: 5/8"-11 UNC (Coarse)
• Likely zinc-plated steel for corrosion resistance

Fits These Mixers

McNeilus, Terex, Con-Tech. This is a general fastener that fits various applications on concrete mixers from manufacturers like McNeilus, Terex, and Con-Tech where a 5/8-11 lock nut is required. Common uses include securing chutes, brackets, fenders, and other mounted hardware.

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.