SPN-LOC®
Twin-Spin Serrated Free-Spinning Locknut
The SPN-LOC® is an all-metal fastener engineered to provide a secure and vibration-resistant locking mechanism. This locknut’s unique design features serrated locking elements that can be located either on the bearing surface only or on both nut faces, enhancing its locking capabilities.
This locknut is designed to turn freely on a bolt until it is firmly seated against a base. Upon further tightening, the serrated elements engage with the mating surface, creating friction that prevents the nut from loosening under vibration or dynamic loads. This self-locking feature ensures a durable and maintenance-free connection, eliminating the need for additional locking components.
Application
SPN-LOC® locknuts are suitable for a wide range of applications, including:
- Automotive Industry: Securing components subject to constant vibration and movement.
- Machinery and Equipment: Maintaining the integrity of assemblies in industrial machines.
- Aerospace Sector: Providing reliable fastening solutions in high-stress environments.
Specifications
Materials
Available in steel grades 2, 5, and 8, Monel, brass, bronze, aluminum alloys, and stainless steel to suit different environmental conditions and strength requirements.
Threads
Offered in UNC, UNF, or 8UN Series, Class 2B, 3B, left-hand thread, and Metric to accommodate diverse threading standards.
Finishes
Options include plain, zinc, cadmium, and other platings and coatings to meet specific corrosion resistance needs.
Installation
The installation process for the SPN-LOC® locknut is straightforward:
Threading
Manually spin the locknut onto the bolt until it contacts the bearing surface.
Seating
Continue to tighten the locknut until it is firmly seated against the base.
Locking
This method ensures a secure and permanent fastening without the need for supplementary locking devices.
This method ensures a secure and maintenance-free fastening without the need for supplementary locking devices.
