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Barrel Locks & Keys

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General Purpose Locks

Plug Lock Assembly

Secures Female Pipe Threads from Unauthorized Access


The Plug Lock Assembly is a heavy duty steel locking assembly engineered to secure female pipe threads from unauthorized access. The internal plug meets NPT standards for pipe. The outer body is tapered and will freely rotate around the inner body preventing efforts to unscrew the device. Special design features prevent moisture or glue from seeping between the inner and outer bodies. Plug Locks are available in standard thread sizes from 1/2" to 2".

Plug Lock Assembly


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Features and Benefits


• Heavy duty carbon steel construction
• Case hardened components resist cutting with hacksaws and other tools
• Threaded plug meets NPT standards
• Available in multiple sizes to fit 1/2" to 2" female pipe
• Available with optional metal or steel sealing ferrule
• Available with your choice of Inner-Tite standard length barrel lock
• Specially plated for corrosion resistance

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Additional Plug Lock Assembly Images

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The Plug Lock Assembly is an ideal solution for securing exposed female pipe threads.

The Outer Body turns freely while the Inner Body remains securely threaded in the pipe preventing the device from being unscrewed.

Plug Locks are available with an optional Metal Sealing Ferrule or Heavy Duty Steel Sealing Ferrule that provide an excellent means to seal the assembly.

Plug Lock Assembly Installed

Free Turning Outer Body

Optional Sealing Provisions