Square Head Plugs for NPT Threads protect NPT threads and fittings from moisture, dust and damage during low-pressure testing and in-plant handling. They can also be used as masking during plating and painting and are not intended for permanent applications.
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Square Head Plugs for National Pipe Thread (NPT) Threads

Square Head Plug for National Pipe Thread (NPT) 1/8-27 Size
Square Head Plugs for National Pipe Thread (NPT) Threads

Square Head Plug for National Pipe Thread (NPT) 1/4-18 Size
Square Head Plugs for National Pipe Thread (NPT) Threads

Square Head Plug for National Pipe Thread (NPT) 3/8-18 Size
Square Head Plugs for National Pipe Thread (NPT) Threads

Square Head Plug for National Pipe Thread (NPT) 1/2-14 Size
Square Head Plugs for National Pipe Thread (NPT) Threads

Square Head Plug for National Pipe Thread (NPT) 3/4-14 Size
Description N/A Square Head Plugs for NPT Threads protect NPT threads and fittings from moisture, dust and damage during low-pressure testing and in-plant handling. They can also be used as masking during plating and painting and are not intended for permanent applications.
Shape N/A Square
Material N/A Polyethylene
Color N/A Red
Length N/A 0.37 in9.4 mm N/A 0.43 in10.9 mm N/A 0.49 in12.4 mm N/A 0.55 in14 mm N/A 0.64 in16.3 mm
Head Size N/A 0.28 in7.1 mm N/A 0.38 in9.7 mm N/A 0.44 in11.2 mm N/A 0.56 in14.2 mm N/A 0.62 in15.7 mm
To Fit National Pipe Thread (NPT) N/A 1/8-27 N/A 1/4-18 N/A 3/8-18 N/A 1/2-14 N/A 3/4-14
Stem Height N/A 0.25 in6.4 mm
Threaded Area Length N/A 0.29 in7.4 mm N/A 0.35 in8.9 mm N/A 0.42 in10.7 mm N/A 0.47 in11.9 mm N/A 0.52 in13.2 mm
Features and Benefits N/A
  • Protects threaded components during production, shipping and storage
  • Square head allows easy installation
  • Sizes to fit 1/8-27 through 1-1/2" 11-1/2 NPT Threads
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