EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
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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.
Square Head Plugs for National Pipe Thread (NPT) Threads
Square Head Plugs for National Pipe Thread (NPT) Threads - 2
Unit of Measure
1 

Item #

Item Name

Head Size

To Fit National Pipe Thread (NPT)

Threaded Area Length

04MSPN0125RD4 N/A Square Head Plug for National Pipe Thread (NPT) 1/8-27 Size N/A 0.28 in7.1 mm N/A 1/8-27 N/A 0.29 in7.4 mm
04MSPNO25ORD4 N/A Square Head Plug for National Pipe Thread (NPT) 1/4-18 Size N/A 0.38 in9.7 mm N/A 1/4-18 N/A 0.35 in8.9 mm
04MSPNO375RD4 N/A Square Head Plug for National Pipe Thread (NPT) 3/8-18 Size N/A 0.44 in11.2 mm N/A 3/8-18 N/A 0.42 in10.7 mm
04MSPN0500RD4 N/A Square Head Plug for National Pipe Thread (NPT) 1/2-14 Size N/A 0.56 in14.2 mm N/A 1/2-14 N/A 0.47 in11.9 mm
04MSPN075ORD4 N/A Square Head Plug for National Pipe Thread (NPT) 3/4-14 Size N/A 0.62 in15.7 mm N/A 3/4-14 N/A 0.52 in13.2 mm
04MSPN1000RD4 N/A Square Head Plug for National Pipe Thread (NPT) 1-11 1/2 Size N/A 0.81 in20.6 mm N/A 1-11 1/2 N/A 0.59 in15 mm
04MSPN125ORD4 N/A Square Head Plug for National Pipe Thread (NPT) 1 1/4-11 Size N/A 1 in25.4 mm N/A 1 1/4-11 N/A 0.83 in21.1 mm
04MSPN1500RD4 N/A Square Head Plug for National Pipe Thread (NPT) 1 1/2-11 Size N/A 1.25 in31.8 mm N/A 1 1/2-11 N/A 0.83 in21.1 mm
Unit of Measure
1