7 16 20 Unf Major Diameter ANSI ASME EXTERNAL Screw Thread Size Chart All units are in inches Unified Screw Threads per ANSI ASME B1 1 1989 R2001 R2001 Nomenclature are used Acceptability criteria are described in ANSI ASME B1 3M 1992 R2001 Note This screw chart is not comprehensive of all available standard threads as provided by the standard Max a
UNF Unified National Fine Thread Similar to UNC UNC and UNF threads are the choices for the customary screws and nuts The flank angle is 60 Unified threads comes in three different classes UNC threads according ANSI B1 1 Pitch is the distance between screw grooves and is commonly used with inch sized products and specified as threads per inch Lead is the linear travel the nut makes per one screw revolution The pitch and lead are equal Example Typical designation of an UNC thread
7 16 20 Unf Major Diameter
7 16 20 Unf Major Diameter
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Thread Geometry Unified Fine UNF AN Precision Engineering
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Thread Chart Metric Major And Minor Diameters Eduaspirant
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Major Diameter This is the largest diameter of the screw thread and is the dimension measured on the crest of the external thread or the root of the internal thread Tap Drill Size This is the recommended diameter of the hole Each number describes an arbitrary diameter as shown in the below table It is also allowed to denote the diameters with a decimal value For example 0 250 1 4 0 4375 7 16 etc By default the pitch is given in TPI For example 1 4 20 means a thread with a pitch of 20 TPI 1 20 0 05 It is also allowed to denote the pitch by distance
General Note All dimensions expressed in inches Supplements Thread calculators and charts ASME UN screw thread calculator Reference ASME B1 1 2003 Unified Inch Screw Threads UN and UNR Thread Form The table below shows the types of screw threads sizes and specifications of Unified Coarse UNC Unified Fine UNF and Unified Extra Fine UNEF threads For guidance only UNC UNF UNEF UNC Thread Major Diameter Thread Per Inch Pitch Diameter Minor Diameter Male Thread Minor Diameter 7 16 0 4375 20 0 4050 0 3780 0 3834 1
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This is one of three graded series UNC Unified National Corase UNF Unified National Fine and UNEF Unified National Extra Fine The Nominal Major Diameter and Threads per inch Pitch are defined by ANSI ASME B1 1 and are the choices for the customary Unified screws and nuts All dimensions in mm unless otherwise stated Thread geometry for Unified Fine UNF threads
7 16 20 20 0 438 11 112 0 3780 0 3834 9 90 1 270 1 2 20 20 0 500 12 700 0 4405 0 4459 11 50 1 270 9 16 18 18 0 563 14 288 0 4964 0 5024 12 90 1 411 5 8 18 18 0 625 15 875 0 5589 0 5649 14 50 1 411 3 4 16 16 0 750 19 050 0 6763 0 6823 17 50 1 587 7 8 14 14 0 875 22 225 0 7900 0 7977 20 40 1 814 1 12 12 1 000 25 400 0 9001 0 9098 23 25 2 117 ANSI ASME INTERNAL Screw Thread Size Chart All units are in inches Unified Screw Threads per ANSI ASME B1 1 1989 R2001 R2001 Nomenclature are used Acceptability criteria are described in ANSI ASME B1 3M 1992 R2001 Note This screw chart is not comprehensive of all available standard threads as provided by the standard
Unc Tap Drill Size Chart Pdf Jae Sears
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Thread Chart UNF UNC Major And Minor Diameters
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ANSI ASME EXTERNAL Screw Thread Size Chart All units are in inches Unified Screw Threads per ANSI ASME B1 1 1989 R2001 R2001 Nomenclature are used Acceptability criteria are described in ANSI ASME B1 3M 1992 R2001 Note This screw chart is not comprehensive of all available standard threads as provided by the standard Max a
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UNF Unified National Fine Thread Similar to UNC UNC and UNF threads are the choices for the customary screws and nuts The flank angle is 60
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7 16 20 Unf Major Diameter - The table below shows the types of screw threads sizes and specifications of Unified Coarse UNC Unified Fine UNF and Unified Extra Fine UNEF threads For guidance only UNC UNF UNEF UNC Thread Major Diameter Thread Per Inch Pitch Diameter Minor Diameter Male Thread Minor Diameter 7 16 0 4375 20 0 4050 0 3780 0 3834 1
