Threadsper inch tpi. Pitch Diameter mm d2=D2. Minor Diameter Male Thd. d3. Thread Height H1. Tap Drill Diameter mm. 1/16". BSW. 1.587. 0.423. Thispage provided the thread dimensions of 3 - 8 NPTF. NPTF stands for National Pipe Thread Fuel, based on ASTM B1.20.3. It is also called Dryseal Pipe Thread. It is a variation of the more popular NPT thread standard based on ASTM B1.20.1. Learn more about NPTF and the difference between NPTF and NPT. Thispage provided the thread dimensions of 1/4 - 18 NPTF; NPTF stands for National Pipe Thread Fuel, based on ASTM B1.20.3. It is also called Dryseal Pipe Thread. It is a variation of the more popular NPT thread standard based on ASTM B1.20.1. Learn more about NPTF and the difference between NPTF and NPT; 1/4 - 18 NPTF - External Basic Thread TheBSPT thread chart calculator shows sizes, dimensions, tolerances and designation for jointing pipe threads for thread sizes from 1/16 to 6 according to ISO 7-1 standard. The thread form follows the British Standard Whitworth thread. - Threads are taper external, parallel internal or taper internal and are intended for use with pipes 21/2 8 2.76 3 8 3.39 4 8 4.39 Example shown is a 3/4 NPT male pipe thread and the measurement in inches TB NPT Pipe Size Identification This condensed chart may be helpful in identifying NPT pipe thread sizes. NPT pipe threads are the most common pipe thread used in the USA. This chart may not apply, if the pipe thread is . UNCUNF UNEF mmUNM NPT METRIC Dia. Thread Pitch in mm Coarse Fine THREAD SIZE COMPARISON CHART Dia. Siz e Gau ge Si e ge BRITISH No. of Threads/Inch BA BSW BSF BSP Major Dia. Inch mm 19 Jan 2018 AT 4 R P: F: 1-888-252-6380 www. .com Inch and Metric Pouce et Métrique ANSIASME B1.20.1: collects the specifications for the NPT thread, replacing the original ANSI B2.1. ANSI B20.3: contains the NPTF thread specifications, replacing the original ANSI B2.2. ANSI B.20.5: contains the specification of the gauges to verify the NPTF thread. Having trouble finding the fittings you need? Availablein tube sizes from 1/16 to 2 in. and 2 to 50 mm Straight Thread and NPT), 22 AN and AN Bulkhead Fitting, 23 10-32 Thread, M5 × 0.8 Thread, and Metric Thread (RS), 24 Features, 2 The Swagelok Tube Fitting Advantage, 6 Compliance with 3mm: Swagelok® Tube Fitting: 1/8 in. Male NPT: View Product: SS-3M0-1-2BT: 316 Stainless Steel: 3 mm: Swagelok® Tube Fitting: 1/8 in. Male NPT: View Product: SS-3M0-1-2RP: 316 Stainless Steel: 3 mm: Swagelok® Tube Fitting: 1/8 in. Male ISO Parallel Thread: View Product: SS-3M0-1-2RS: 316 Stainless Steel: 3 mm: Swagelok® Tube Fitting: 1/8 Heres an example: To measure the threads on a ¼ inch male pipe thread (MPT), measure the very outsides of the thread, then subtract ¼ inch of the outside diameter (OD) measurement to account for the thickness of the pipe wall on either side. When measuring a female pipe thread (FPT), measure the OD of the pipe itself and

3 8 npt thread dimensions in mm