Page 382 - ZSi-Foster-Engineering-Catalog
P. 382

Pipe Thread Identification
      Nominal Pipe Size (inches)
Actual
Pipe Size (inches)
Nominal Thread Size (inches)
     1⁄8
0.41
    1⁄4
0.54
1⁄8 - 27
 1⁄4 - 18
       3⁄8
0.68
3⁄8 -18
     1⁄2
0.84
1⁄2 -14
       3⁄4
1.05
3⁄4 -14
       1
1.32
1-11-1⁄2
     1-1⁄4
1.66
1-1⁄4 - 11-1⁄2
     1-1⁄2
1.90
    2
2.38
1-1⁄2 - 11-1⁄2
 2 - 11-1⁄2
       2-1⁄2
2.88
2-1⁄2 - 8
       3
3.50
3 -8
     2 x 11-1⁄2
1-1⁄2 x 11-1⁄2 1-1⁄4 x 11-1⁄2
1 x 11-1⁄2
3⁄4 x 14
1⁄2 x 14
3⁄8 x 18 1⁄4 x 18 1⁄8 x 27
1⁄16 x 27
2 x 11-1⁄2
1-1⁄2 x 11-1⁄2 1-1⁄4 x 11-1⁄2
1 x 11-1⁄2
3⁄4 x 14
1⁄2 x 14
3⁄8 x 18 1⁄4 x 18 1⁄8 x 27
1⁄16 x 27
Female Pipe Thread Gauge
• Hold pipe thread against scale on edge of page
• Align one side of pipe thread with illustration base line • Read nominal pipe size directly from scale
EXAMPLE 3⁄4“ Male Pipe Thread (MPT)
                                                                                                   Male Pipe Thread Gauge
• Stand pipe thread vertically on diagram
• Align outside diameter of pipe thread with matching circle • Read nominal pipe size directly above circle
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EXAMPLE 3⁄4“ Female Pipe Thread (FPT)
 




































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