OMNI-LOK™
Omni-Lok™ Material Additive Type
Temperatures to 1200°F
Ideal for short thread engagements
Wide range of locking element materials
The Omni-Lok™ process is a patented method to make bolts and nuts stay in place, regardless of the extent of vibration or temperature stress. Omni-Lok fasteners incorporate single or multiple pins, fully contained in holes located within the thread, and held parallel to the longitudinal axis. The pin is precisely located in such a manner that the outer diameter of the pin extends above the root diameter of external threads–and below the minor diameter of internal threads–at a controlled height. This provides the required torque, creating an effective wedge in the threaded assembly for frictional resistance to rotation, i.e. prevailing torque.
The Omni-Lok process is well-suited for special threaded components which require a locking element but have one or more of the following difficult-to-deal with situations:
• Withstand high temperature (up to 1200°F; 649°C), or low temperature (cryogenic) requirements.
• Withstand high vibratory and stress conditions placed on external and internal threaded parts.
• Conforms to MIL-F-8961 requirements.
• Enable parts with a short thread engagement to utilize a self-locking feature.
• High prevailing torque requirement.
• Unusual and non-conventional configurations
• Severe corrosion environmental conditions.
• Wide range of locking element materials
• Omni-Lok pins can be fabricated from an almost endless list of materials, such as high temperature resisting alloys and soft ductile materials, in order to provide a controlled and consistent torque for severe applications.
Every Omni-Lok project is special. After discussions between Long-Lok Technical Service personnel and your engineers, a torque requirement specification will be established and a formula developed to control the Omni-Lok process. One or more holes are then formed longitudinally in the bolt at a specified distance inward of the major diameter. One or more pins of proper diameter to fit the hole are then inserted.
Military Specifications:
MIL-DTL-18240
Commercial Standards:
IFI 124