Keyword(s):
$5.00 S&H(ground) continental US!
$16.00 S&H(ground) Canada!
1-800-491-3850
8 A.M. - 5 P.M. CST
sales@pressure-washer-parts.com
Annovi Reverberi (AR) Pumps  |  CAT Pumps  |  Comet Pumps  |  General Pumps  |  Giant Pumps  |  Hypro Pumps
Pump Oil & Tools  |  Unloader Valves  |  Hoses  |  Hose Reels  |  Chemical Injectors  |  Washer Inlet - Low Pressure
Accessories  |  Spray & Soap Nozzles  |  Rotating Nozzles  |  Sewer Nozzles  |  Pressure & Thermal Relief Valves
Quick Disconnects  |  Plumbing Fittings  |  Gauges  |  Trigger Guns & Lances  |  Telescoping Wands  |  Foot Valves
Swivels  |  Electrical Components  |  Drive Components  |  Heating Components  |  Mosmatic Products  |  Detergents
Customer Login Webpage Link Website Search Webpage Link Display Shopping Cart Homepage

Pipe Thread Sizes

Pipe Thread sizes are given in there own measurement units nominal pipe thread(NPT). Example 3/8" NPT=.675 inches. Most people make the mistake of assuming 3/8" NPT would equal .375 inches (this is incorrect). To determine pipe thread size for a FNPT measure the inside diameter and for MNPT measure the outside diameter. Take the measurement and find the closest size given in column 1 or column 2, column 3 will be your NPT size.

Column 1 Column 2 Column 3
Inches Inches(Decimal) Pipe Thread Size
5/16 0.3125 1/16
13/32 .405 1/8
35/64 0.540 1/4
43/64 0.675 3/8
27/32 0.840 1/2
1-3/64 1.050 3/4
1-5/16 1.315 1
1-21/32 1.660 1-1/4
1-29/32 1.900 1-1/2
2-3/8 2.375 2
2-7/8 2.875 2-1/2

Pressure-Washer-Parts.com, Power Washing/Water Pressure Cleaning, Sioux Falls, SD
Pressure-Washer-Parts.com
Spearfish, SD U.S.A.

© 2001 Copyright, All Rights Reserved
Contact Us | Policies | Order Status | Pipe Threads | R or L Pump