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XRP Plumbing Dry Break Couplers Adapter Flare-Pipe Aluminum Weld Bungs Hex Plugs AN Swivel-Pipe Adapters Female Swivel Adapters Pipe Adapters Pipe to Tube Adapters Swivel Pipe Adapters Female Swivel Couplers Flare Adapters Flare Reducers AN Reducers & Expanders XRP Filters Stainless Steel Hose Teflon Hose Hose Ends Hose Finishers Pipe Bushings Pipe Unions Plastics Caps & Plugs Pressure Gauges EPR O-Rings O-Ring Fittings Bulkhead Fittings Carb Fittings Tee Fittings Tube Nuts & Sleeves XRP Thread Tech

AN Thread Sizes

AN Size Metal Tube O.D. Thread Size
2 1/8' 5/16-24 UNJ/SAE
3 3/16" 3/8-24 UNJ/SAE
4 1/4" 7/16-20 UNJ/SAE
6 3/8" 9/16-18 UNJ/SAE
8 1/2" 3/4-16 UNJ/SAE
10 5/8" 7/8-14 UNJ/SAE
12 3/4" 1 1/16-12 UNJ/SAE
16 1" 1 5/16-12 UNJ/SAE
20 1 1/4" 1 5/8-12 UNJ/SAE

NPT Thread Sizes

Pipe Thread Size Threads Per Inch Fitting I.D. Closest AN Fitting Size
1/8" 27 1/8" 4
1/4" 18 1/4" 6
3/8" 18 3/8" 8
1/2" 14 1/2" 10
3/4" 14 3/4" 12
1" 11 1/2" 1" 16
1 1/4" 11 1/2" 1 1/4" 20

 

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