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In the tree view, click Piping > Piping Specification > Model Rules > Bolt Extension rule.
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Click the Insert Row Command to insert a blank row in the grid view.
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In the Nominal Piping Diameter column, type the NPD for which you want to define bolt extensions.
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In the Nominal Piping Diameter Units column, type the units for the NPD. For example, type mm or in.
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In the Pressure Rating column, type the pressure rating for which you want to define bolt extensions.
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In the End Preparation column, type the end preparation code for which you want to define bolt extensions.
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In the End Standard column, type the end standard code for which you want to define bolt extensions.
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In the Standard Bolt Extension for Studs column, specify the length of exposed threads for studs. Be sure to include the units, in or mm, when specifying this value.
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In the Standard Bolt Extension for Machine Bolts column, specify the length of exposed threads for machine bolts. Be sure to include the units, in or mm, when specifying this value.
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Valid end preparation codes are listed in the End Preparation select list.
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Valid end standard codes are listed in the End Standard select list.
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The Bolt Extension sheet in the Piping Specification.xls workbook corresponds to the Bolt Extension Rule node. See Piping Reference Data.