Find the correct pipe plug size
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Part numbers ending with "M" have a ceramic magnet
Part numbers ending with "SM" have a neodymium magnet


How to find the correct pipe plug size

For male threads measure the larger end of the thread "A".

For female threads measure the diameter of "B".

Thread length is "C"

Thread diameter measurement

Pipe thread size
5/16 .3125 1/16
13/32 .405 1/8
35/64 .540 1/4
43/64 .675 3/8
27/32 .840 1/2
1 3/64 1.05 3/4
1 5/16 1.315 1
1 21/32 1.66 1 1/4
1 29/32 1.90 1 1/2
2 3/8 2.375 2

 

 

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