InfraStake Design Guidelines

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Hollow Round Boss Design

Notes:

  • The recommended clearance hole diameter is 1.1D (1.25D is the maximum diameter)
  • The maximum recommended boss height above the mating surface is 1.5D
  • These guidelines apply to bosses up to 7.62 mm (0.30″) in diameter

Solid Round Boss Design

Notes:

  • The recommended clearance hole diameter is 1.1D (1.25D is the maximum diameter)
  • The maximum recommended boss height above the mating surface is 1.5D
  • These guidelines apply to bosses up to 3.30 mm (0.13″) in diameter

Rectangular Boss Design

Note:

  • Please consult the Extol Applications Lab for recommendations on through-hole clearances and boss height above the mating surface.

InfraStake Modules

Module selection is based on boss size and spacing.

Model IS32

Model IS125

Model ISM20

IS32 Boss Size Recommendations

For dimensions outside of these maximum recommendations, please contact your sales representative or our Process Development Center for feasibility testing.

Boss TypeMax HeightMax Diameter
Solid-Round12.7 mm (0.500")5.5 mm (0.216")
Hollow-Round12.7 mm (0.500")9.0 mm (0.354")
Boss TypeMax HeightMax ThicknessMax Length
Rectangular8 mm (0.315")3 mm (0.118")10 mm (0.394")

Max Through-Hole Size: 9.5 mm (0.374″)

IS125 Boss Size Recommendations

For dimensions outside of these maximum recommendations, please contact your sales representative or our Process Development Center for feasibility testing.

Boss TypeMax HeightMax Diameter
Solid-Round9.5 mm (0.375")4 mm (0.157")
Hollow-Round9.5 mm (0.375")6.4 mm (0.250")
Boss TypeMax HeightMax ThicknessMax Length
Rectangular8 mm (0.315")3 mm (0.118")10 mm (0.394")

Max Through-Hole Size: 9.9 mm (0.389″)

ISM20 Boss Size Recommendations

For dimensions outside of these maximum recommendations, please contact your sales representative or our Process Development Center for feasibility testing.

Boss TypeMax HeightMax Diameter
Solid-Round4 mm (0.157")3 mm (0.118")
Hollow-Round4 mm (0.157")4 mm (0.157")
Boss TypeMax HeightMax ThicknessMax Length
Rectangular4 mm (0.157")2.5 mm (0.098")4 mm (0.157")

Max Through-Hole Size: 5.5 mm (0.217″)

Boss Angles

Best Design

Great Design

Poor Design

Staking Types

Dome

(Hollow or Solid Round Boss)

Rosette

(Hollow Round Boss)

Elongated Dome

(Rectangular Boss)