Hex Socket Plugs for NPT Threads and Fittings protect threads during low-pressure testing and in-house processing or handling. They are not intended for permanent applications.
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Item #

Item Name

Inside Diameter

Inside Length

To Fit National Pipe Thread (NPT)

04MHSPNO25ORD4 N/A Hex Socket Plug for National Pipe Thread (NPT) 1/4-18 Size Thread N/A 0.260 in6.60 mm N/A 0.31 in7.9 mm N/A 1/4-18
04MHSPNO375RD4 N/A Hex Socket Plug for National Pipe Thread (NPT) 3/8-18 Size Thread N/A 0.330 in8.40 mm N/A 0.38 in9.7 mm N/A 3/8-18
04MHSPN0500RD4 N/A Hex Socket Plug for National Pipe Thread (NPT) 1/2-14 Size Thread N/A 0.390 in9.90 mm N/A 0.38 in9.7 mm N/A 1/2-14
04MHSPN075ORD4 N/A Hex Socket Plug for National Pipe Thread (NPT) 3/4-14 Size Thread N/A 0.570 in14.5 mm N/A 0.47 in11.9 mm N/A 3/4-14
04MHSPN1000RD4 N/A Hex Socket Plug for National Pipe Thread (NPT) 1-11 1/2 Size Thread N/A 0.64 in16.3 mm N/A 0.59 in15 mm N/A 1-11 1/2
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