InfraStake Design Guidelines

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How to design for plastic staking

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Tips For Optimizing Strength:

  • 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
  • Add radius and chamfer to prevent A-surface sink and improve stake strength
  • These ratios apply to bosses up to 7.62 mm (0.30″) in diameter

Size Limitations:

These are the maximum sizes that can be staked by an InfraStake module. They are not recommended for optimum strength.

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

Height
Diameter
Through-Hole
IS32
12.7 mm
9.0 mm
9.5 mm
IS125
9.5 mm
6.4 mm
9.9 mm
ISM20
4 mm
4 mm
5.5 mm

Tips For Optimizing Strength:

  • 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
  • Add radius and chamfer to prevent A-surface sink and improve stake strength
  • These ratios apply to bosses up to 3.30 mm (0.13″) in diameter

Size Limitations:

These are the maximum sizes that can be staked by an InfraStake module. They are not recommended for optimum strength.

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

Height
Diameter
Through-Hole
IS32
12.7 mm
5.5 mm
9.5 mm
IS125
9.5 mm
4 mm
9.9 mm
ISM20
4 mm
3 mm
5.5 mm

Tips For Optimizing Strength:

  • Please consult our Process Development Center for further guidance on rectangular boss geometries.

Size Limitations:

These are the maximum sizes that can be staked by an InfraStake module. They are not recommended for optimum strength.

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

Height
Thickness
Length
IS32
10 mm
3 mm
10 mm
IS125
8 mm
3 mm
10 mm
ISM20
4 mm
2.5 mm
4 mm

InfraStake Modules

Module selection is based on boss size and spacing.

Model IS32

Model IS125

Model ISM20

Boss Angles

InfraStake modules can be tipped up to 15 degrees from the axis of the boss.

Best Design

 

Great Design

 

Poor Design

 

Dome

(Hollow or Solid Round Boss)

Rosette

(Hollow Round Boss)

Elongated Dome

(Rectangular Boss)

Have a question?

Please contact us with any questions.

Contact us.