INTERNALTHREADS – CLASS 2B Nominal Size & Threads / Inch & Series Designation Allowance Minor Diameter Pitch Diameter Major Dia-meter 3/8-24 UNF 0.0011 0.3300 0.0340 0.3479 0.3528 0.0049 0.3750 7/16-14 UNC Lookingfor VERMONT GAGE, 3/8"-24 Thread Size, Threaded Plug Gauge Assembly? Find it at Grainger.com®. With over one million products and 24/7 customer service we have supplies and solutions for every industry. Choosefrom our selection of 3/8"-24 screws, including over 950 products in a wide range of styles and sizes. In stock and ready to ship. Thread Spacing. Coarse. Fine. Thread Direction. Left Hand. Right Hand. Right Hand and Left Hand. Socket Head Profile. Low. Standard. Thread Type. UNC. UNF. UNRF. Head Height. 3/16" 0.199" 0.234" 15/64" 1/ Designation The standard designation for a UTS thread is a number indicating the nominal (major) diameter of the thread, followed by the pitch measured in threads per inch. For diameters smaller than 1 4 inch, the ThreadMajor diameter Thread per inch Pitch diameter Minor diameter male thread Minor diameter female thread; 13/16: 0.8125: 20: 0.7800: 0.7530: 0.7584: 7/8: 0.8750 Onceyou know your wire diameter, you need to find out what is the premissable Measurement for your pitch diameter (Depending on the class). Use our Over Wire Calculator to find out! 1 1/4 - 18 UNEF : Basic Thread Dimensions (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more. Overview The Unified Thread Standard (UTS) defines a 60° thread form in Inch dimensions as described in the ASME B1.1 standard. It is the North American Whatis the difference between unf and npt? The abbreviation UNF stands for “Unified National Fine”, this is thread with a fine pitch. The tool for UNF is labeled AF, ANSI/ASME B1.1. UNF threads are most commonly found in the aerospace industry. NPT stands for National Pipe Tapered threads, also known as ANSI/ASME B1.20.1 pipe threads. MachineScrews - Thread Dimensions Axis of screw thread 2A External Threads for Machine Screws and SEMS ASME B 1.1 (2002) Nominal Size / Thread TPI Type Major Diameter Allowance Max Min Pitch Diameter 3/8-24 0.375 UNF .0011 .3739 .3667 .3468 .3430 .003804 0.0878 5268 1/2-13 0.500 UNC .0015 .4985 .4876 .4485 .4435 .004965 FJdaA.

3 8 24 unf 2a thread dimensions