ISO228-2:1987 Verification by means of limit gauges. ISO 228 - Pipe Threads where Pressure Tight Joints are not made on the Threads. Major (Outside) Diameter. TPI stands for Threads Per Inch and is a count of the mumber of threads per inch. TPI is used for American fasteners. Thread pitch is the distance between the threads and is used for 4x 3 100 x 80 2 3/8 60 1 7/8 48 (1) X dimension is a nominal makeup dimension for layout only. Do not use for assembly dimensions. * Also available with British Standard Threads. Specify when ordering. Part Part Number 2” x 1” Female NPT 3-4 2” x 1 1/4” Female NPT 012020-232-4 2” x 1 1/2” Female NPT 012020-231-4 3” x 2 11/2 11.5 1.82 2 11.5 2.30 2-1/2 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 12″ Threaded Pipe Nipples are manufactured by high quality carbon steels with a galvanized finish, also available in extensive range of dimensions. such as NPT thread to BSP thread nipples are also exist. Threaded Pipe Nipples Dimensions. Threaded Pipe Nipples Dimensions. Standard: ASME B16.11, BS 3799. 11 In Europe Metric (DIN) pipe threads are common on German machines. These generally have a 1.5mm thread pitch, although this can vary. Smaller sizes can be 1.0mm thread pitch, and larger sizes can be 2.0mm thread pitch. Other variations occur. French equipment often have GAZ fine threads with a 24 degree cone. Forexample, M8 X 0.75 means an 8 mm (0.315″) thread with a pitch of 0.75 mm (0.03″ or 34 TPI). If the “X P” is omitted, the pitch is defined by the Coase Pitch Series according to ISO-261. Number of starts: Designated by “Ph”. For example, M8 X Ph2.25P0.75. In this case, 2.25 mm is the lead, and 0.75 mm is the pitch. Ph must be a Threadedflange dimensions class 300, 400, 600, 900, up to 24 inch (ASME B16.5) with stud bolts requirements (#bolts, diameter) Bolt circle Diameter mm Holes # Holes Dia. mm Bolt Dia. inch. Length FF Flange Length RF Flange Length RTJ Flange; 1/2: 60.5: 4: 15.7: 1/2: 50.8: 63B= 63 mm (2 1/2 in.) dial 100B = 100 mm (4 in.) dial 160B = 160 mm (6 in.) dial Product Function and Type Pressure gauge, industrial Process Connection Location L = Lower mount (all dial sizes) C = Center-back mount (63 mm [2 1/2 in.] dial size only) B = Lower-back mount (100 and 160 mm [4 and 6 in.] dial sizes only) Fitting Size and Type 63 .

1 2 npt thread dimensions in mm