Your basket is currently empty. To get a shipping quote, add items to your basket and click the button above.
|
|
|
|
Pipe Thread Size Help
Pipe Thread Sizes do not refer to the physical dimension. To determine pipe
thread size, measure outside diameter (male threads) or inside diameter (female
threads) and then use table below to determine pipe thread size.
Example, a 3/8" NPT pipe thread has an outside diameter of 0.675 inches.
|
|
|
|
|
FPT
|
MPT
|
M22 - Twist
|
|
Measure the inside diameter of thread at "A"; Find figure nearest this dimension
in column 2 or 3 of chart. The dimension in column 1 will be your nominal pipe thread
size.
|
Measure the outside diameter of the large portion of the thread at "B"; Find figure
nearest this dimension in column 2 or 3 of chart. The dimension in column 1 will
be your nominal pipe thread size.
|
This is a picture of a 22 mm twist connector. There are 2 types used on pressure
washers. The most common has a 14 mm seal cone.
"C" seal cone = 14 mm
"C" seal cone = 15 mm
|
|
Column 1
|
Column 2
|
Column 3
|
|
Pipe Thread Size
|
Approx. (fraction) Inch.
|
Actual (decimal) Inch.
|
|
1/8
|
13/32
|
.405
|
|
1/4
|
35/64
|
.540
|
|
3/8
|
43/64
|
.675
|
|
1/2
|
27/32
|
.840
|
|
3/4
|
1-3/64
|
1.050
|
|
1
|
1-5/16
|
1.315
|
|
1-1/4
|
1-21/32
|
1.660
|
|
1-1/2
|
1-29/32
|
1.900
|
|
Metric Size
Twist Coupler
|
|
|
|
14 mm
|
17/32
|
.531
|
|
15 mm
|
19/32
|
.594
|
|
22 mm
|
27/32
|
.844
|
|
|
|
|