InfraStake Design Guidelines

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How to design for plastic staking

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Hollow Round Boss Design

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

5.5 mm

Solid Round Boss Design

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

Rectangular Boss Design

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