V-LOK is a patented screw-thread technology with a proven anti-loosening function when paired with normal screw thread technology. V-LOK has been tested to NAS 3350 (maximum vibration) and DIN 65151 (change in axial force). V-LOK nuts are manufactured in a similar way to standard nuts and are designed to be used in place of standard nuts in any application.
V-LOK nuts consist of two parallel crests next to each other on the same ridge. These two crests induce double contact lines (locking points) between threads when paired with standard bolt threads. They maximize the static friction force between the bolt and nut threads and prevent loosening.
V-LOK prevents bolts and nuts from loosening due to mechanical impact or vibrations, including Aeolian vibrations, thermal expansion due to thermal load cycling, overheating of joints, expansion due to corrosion etc.
PRINCIPLE OF V-LOK
The screw thread of V-LOK consists of two tangential parts (the first and second tangential parts) to induce double-contact point locking with the other object with a common screw thread. It maximizes the friction force between the bolt and nut screw threads through double-contact points and performs an anti-loosening function.
How They Work:
V-LOK components don’t depend on pressure, they rely on strong static friction that is initially created by the double contact lines between the threads. The dual contact lines (crests) double the already strong static friction, which is the key. Secondly, these two ‘parallel static frictions’ interact and interlock with each other, which further prevents loosening. It means that if one contact line of the two shows slightly reduced static friction the other contact line will still maintain a strong static friction and prevent loosening. In other words - it is highly unlikely that both contact lines would reduce or lose the strong static friction at the same time.
Perfect solution for any situation where a nut is used; i.e steel support structures, crossarm braces, insulator pins, suspension clamps etc.
Improved reliability (SAIDI, SAIFI) and resilience
Improved public and personnel safety
Reduced energy losses due to bad connections
Reduced losses and damage to property due to unnecessary electrical and mechanical failures
Reduced likelihood of bush fires
Significant cost savings on maintenance and preventable faults
Positive environmental effect
V-LOK nuts are reusable
No need for special tools making them faster and more cost effective
Can be used in both electrical and mechanical connection
STAY TIGHT INSULATOR PINS
Insulator Pins Supplied With V-LOK Nuts
Why not have your insulators and insulator pins supplied with V-LOK nuts included?
We’ve done the hard work. All our insulator kits and pins are available with V-LOK nuts. Simply order from the codes listed below.
Reducing maintenance, and faults with V-LOK technology on your insulator pins can help improve efficiencies, reduce costs and improve the overall reliability of your network.