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How to determine Pipe Thread Size

Pipe thread sizes do not refer to any physical dimensions. The outside diameter of each pipe fitting
must be measured and compared to the table for size identification. For example: a 1/4" NPT has an outside dimension of 0.54". This is especially important when looking for Regulator fittings.

NPT SIZE
THREAD DIAMETER		 THREAD DIAMETER (O.D. of MPT or I.D.
of FPT)
1/8" NPT 0.405
1/4" NPT 0.54
3/8" NPT 0.675
1/2" NPT 0.84
3/4" NPT 1.05
1" NPT 1 1.315
1-1/4" NPT 1.66
1-1/2" NPT 1.9
2" NPT 2.375
2-1/2" NPT 2.875
3" NPT 3.5
4" NPT 4.5
Item Name- Price
Brass Cap 1/4" Female Flare Thread

Brass Cap 1/4" Female Flare Thread

Brass Cap 1/4" Female Flare Thread Brass Cap 1/4 inch Female Flare Thread for ball lock keg, homebrew, draft beer, and beverage dispensing...
Price
$0.75
CO2 Regulator Washer Composite

CO2 Regulator Washer Composite

CO2 Regulator Washer Composite CO2 Regulator Washer Composite for CO2, nitrogen, gas regulator, draft beer, soda, and beverage dispensing systems....
Price
$0.25
CO2 Regulator Washer Nylon

CO2 Regulator Washer Nylon

CO2 Regulator Washer Nylon CO2 Regulator Washer Nylon for CO2, nitrogen, gas regulator, draft beer, soda, and beverage dispensing systems. Suitable...
Price
$0.25
Hex Nipple Right Hand Thread

Hex Nipple Right Hand Thread

Hex Nipple Right Hand Thread HEX NIPPLE - RHT This fitting allows you to connect two right hand threaded pieces, such as regulator bodies.1/4 inch...
Price
$1.49
Hex Nipple Left Hand Thread

Hex Nipple Left Hand Thread

Hex Nipple Left Hand Thread HEX NIPPLE - LHT This fitting allows you to connect two left hand threaded pieces, such as regulator bodies. Suitable for...
Price
$2.40
Smooth Nipple Right Hand Thread 2in.

Smooth Nipple Right Hand Thread 2in.

Smooth Nipple Right Hand Thread 2in. SMOOTH NIPPLE - Right Hand Thread This fitting allows you to connect two RIGHT hand threaded pieces, such as...
Price
$2.25
Hose Stem

Hose Stem

Hose Stem Hose Stem for beer, soda, wine, coffee, water, and commercial beverage equipment. Suitable for commercial beverage service, home draft...
Price
$1.49
MFL Adapter to MPT Right Hand Thread

MFL Adapter to MPT Right Hand Thread

MFL Adapter to MPT Right Hand Thread MFL ADAPTER TO PIPE THREAD - RIGHT HAND THREAD Allows you to attach a 1/4 inch Female Flare Nut to a Female Pipe...
Price
$1.25
MFL Adapter to MPT Left Hand Thread

MFL Adapter to MPT Left Hand Thread

MFL Adapter to MPT Left Hand Thread MFL ADAPTER TO PIPE THREAD - LEFT HAND THREAD Allows you to attach a 1/4 inch Female Flare Nut to a Female Pipe...
Price
$1.75
MFL Adapter to MPT w/ Check Valve

MFL Adapter to MPT w/ Check Valve

MFL Adapter to MPT w/ Check Valve MFL ADAPTER TO PIPE THREAD w/ CHECK VALVE Allows you to attach a 1/4 inch Female Flare Nut to a Female Pipe thread....
Price
$2.25
Pipe Plug 1/4" MPT

Pipe Plug 1/4" MPT

Pipe Plug 1/4" MPT Pipe Plug 1/4 inch MPT for beer, wine, soda, coffee, vending, and commercial beverage equipment. Suitable for commercial...
Price
$0.86
Hex Plug 1/4" Right Hand Thread

Hex Plug 1/4" Right Hand Thread

Hex Plug 1/4" Right Hand Thread Hex Plug 1/4 inch Right Hand Thread for beer, wine, soda, coffee, vending, and commercial beverage equipment....
Price
$0.99
Hex Plug Left Hand Thread

Hex Plug Left Hand Thread

Hex Plug Left Hand Thread Hex Plug Left Hand Thread for beer, wine, soda, coffee, vending, and commercial beverage equipment. Suitable for commercial...
Price
$1.49
Barbed Hose T 5/16"

Barbed Hose T 5/16"

Barbed Hose T 5/16" BARBED HOSE T Barbed "T" fitting. 5/16 inch on all sides. Allows you to attach three hoses. Stainless Suitable for...
Price
$4.65
Pipe Reducer

Pipe Reducer

Pipe Reducer PIPE REDUCER Allows you to reduce from 3/8 inch MPT to 1/4 inch FPT 3/8 inch FPT x 1/4 inch MPT Brass Suitable for beer, wine, soda,...
Price
$1.75
Y Splitter (WYE)

Y Splitter (WYE)

Y Splitter (WYE) Y SPLITTER - (WYE) Allows you to branch off from a 1/4 inch FPT to two 1/4 inch MPT 1/4 inch MPT x 1/4 inch FPT x 1/4 inch FPT Brass...
Price
$4.67
Pressure Relief Valves

Pressure Relief Valves

Pressure Relief Valves Pressure Relief Valves for ball lock keg, homebrew, draft beer, and beverage dispensing repair. Suitable for commercial...
Price
$5.25
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