Bolt Length Calculations - Intergraph Smart 3D - Reference Data - Hexagon PPM

Intergraph Smart 3D Piping Reference Data

English (United States)
Intergraph Smart 3D
Search by Category
Reference Data
Smart 3D Version

Per ASME 16.5 (2003) Annex F, the software calculates bolt lengths for stud bolts and machine bolts as:

Stud Bolt Length = 2 × (F + W + FT + RF + E + N) + G + R + nt

Machine Bolt Length = 2 × (F + FT + RF) + W + E + N + G + R + p + nt


F = Flange thickness specified in the Bolted End Data rule
FT = Tolerance for flange thickness specified in the Bolted End Data rule
W = Washer thickness specified in the Washer Part Data Sheet rule
G = Gasket thickness specified in the Gasket Part Data Sheet rule
RF = Raised face projection specified in the Bolted End Data rule
E = Bolt extension specified in the Bolt Extension rule
R = Total height of facings or depth of ring joint groove for both faces (flange face projection or groove depth)
N = Heavy nut height (equals nominal bolt diameter) or nut height specified in Nut Part Data Sheet
nt = Negative tolerance on the bolt length from Cap Screw Length Calculation Tolerance, Machine Bolt Length Calculation Tolerance, Stud Bolt Length Calculation Tolerance, or Tap End Stud Bolt Calculation Tolerance Rule.
p = Allowance for the height of the point of the machine bolt (= 1.5 × thread pitch)

See Also

Bolt Diameter Equivalence Rule
Bolt Extension
Bolt Selection Filter
Bolt Selection Filter for Nozzles
Preferred Machine Bolt Length
Preferred Stud Bolt Length