Square Head Flanged Plugs for NPT Threads protect NPT Threads 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 Flanged Plugs for National Pipe Thread (NPT) Threads

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

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

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

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

Square Head Flanged Plug for National Pipe Thread (NPT) 3/4-14 Size Thread
Description N/A Square Head Flanged Plugs for NPT Threads protect NPT Threads 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
Head Size N/A 0.28 in7.1 mm N/A 0.430 in10.9 mm N/A 0.430 in10.92 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
Flange Outside Diameter N/A 0.55 in14.0 mm N/A 0.670 in17 mm N/A 0.800 in20.3 mm N/A 0.98 in24.9 mm N/A 1.240 in31.5 mm
Stem Height N/A 0.19 in4.8 mm N/A 0.25 in6.4 mm N/A 0.25 in6.4 mm N/A 0.25 in6.4 mm 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 0.41 in10.4 mm N/A 0.47 in11.9 mm N/A 0.52 in13.2 mm
Features and Benefits N/A
  • Flange protects outside of port
  • Square head allows easy installation
  • Sizes to fit 1/8-27 through 3/4-14 NPT Threads
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