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 Sometimesother sizes are available. Larger standard sizes run up to 300 mm or more. Smaller sizes go down to 0.3 mm (0.012˝). Recommended tap drills will produce from 70 to 80% full thread depth. On many threads a good drill size for tapping can be figured by subtracting pitch from major (outside) diameter. MaleISO Parallel Thread, Straight Shoulder. SS-6M0-1-8RT. 316 Stainless Steel. 6 mm. Swagelok® Tube Fitting. 1/2 in. Male ISO Tapered Thread. SS-6M0-1-M10X1.0RS. 316 Stainless Steel. PipeThread Drilled Hole Sizes NOMINAL SIZE NPT NPTF NPSC NPSM NPSF NPSI BSPT BSPP 1/16 - 27 D (0.246) D (0.246) 0.25 0.25 0.25 1/8 - 27 Q (0.332) Q (0.332) 0.3437 0.3593 0.3437 0.3437 1/8 - 28 0.3281 0.3437 1/4 - 18 0.4375 0.4375 0.4375 0.4687 0.4375 0.4375 1/4 - 19 0.4375 0.4531 3/8 - 18 0.5625 0.5781 0. 5781 0.6093 0.5781 8 0.125. 114.30. 4.500. View our handy online thread size tables to help you find all the information you need about the valve or pipe threads you are working with. Our tables cover thread size, threads per inch, pitch and thread diameter. We have thread tables for both British Standard Pipe (BSP) and National Pipe Thread (NPT). The4 best known pipe thread types at a glance ( NPT | NPTF | BSP | BSPT ) How is an inch thread converted for screws? If you want to convert an inch screw thread, you must have the following simple formula in mind: 1.00 inch = 25.40 mm <=> 2.54 cm. Warning: This conversion formula is only suitable for screw threads, but not for pipe threads! cThree threads for 2-inch size and smaller; two threads for larger sizes. d Military Specification MIL-P-7105 gives the wrench makeup as three threads for 3 in. and smaller. The E 3 dimensions are then as follows: 38 - 28 28-UN : Basic Thread Dimensions (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more Dryseal Pipe Threads (NPTF) British Pipe Threads (BSP) ACME Trapezoidal Threads; Materials Menu Toggle. (mm) es: Allowance: 0.001 (Ref) 0.025 (Ref) d: Major Diameter: 0.3675 - 0.374: 9.335 - 9. UnfinishedThreaded Pipes. NPT threads come in various nominal pipe sizes ranging from 1/16 to 24 inches. Take note that the nominal pipe size is roughly related to the inside diameter of the Schedule 40 pipe series and Otherthread styles are available for machining, aside from the standard NPT form as designated by the ASME B16.5 specification. basic dimensions for a threaded flange The most popular threaded flanges range in ½ inch to 6” nominal pipe size, but we are able to offer NPT threaded flanges up to 24” if necessary. yi29Zq5.