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HEAT-LOK

HL / HLH / HLTS / HLHS FOR AMORPHOUS THERMOPLASTICS

HEAT-LOK is designed for heat staking in amorphous thermoplastics that are sensitive to knurling. These inserts feature rounded knurling without the sharp edges typical of most other inserts, which can stress the plastic. Available in flanged and captive versions.

Technical data

HL INSERTS

HLH FLANGED INSERTS

HLTS STUDS

HLHS FLANGED STUDS

STANDARD MATERIAL
Brass (B) – Other materials available upon request.

BENEFITS

  • The characteristics of these inserts generate low levels of stress on the surrounding material, making them ideal for amorphous thermoplastics.
  • Symmetrical profile facilitates automated installation.
  • High torque resistance.
  • Self-aligning – easy to install.

DESIGN GUIDE

PREPARING THE HOLE

Molded holes are recommended whenever possible. The conical shape of a molded hole should not exceed 1°, and the recommended hole diameter is as measured at the level of the hole reached by the end of the insert. The upper part of the hole must not be rounded or chamfered, and be careful to avoid flaring. Hole diameter tolerance: -0.00 + 0.10 mm.

MOLDING TIPS

The mold should be designed to prevent any residual tension around the boss or hole in which the insert is to be installed.

INSTALLATION

Our Heat-lok inserts are designed for heat staking, rather than ultrasonic welding, because direct heat is better at getting the plastic to flow into the knurled pattern of the insert.

WALL THICKNESS

In the table, we provide a general guide for determining minimum wall thickness, which can vary based on the type of plastic used. It is possible to use thinner walls if necessary, but we highly recommend contacting PSM CELADA Fasteners for preliminary tests.

HEAT-LOK

HL / HLH / HLTS / HLHS FOR AMORPHOUS THERMOPLASTICS

Download the technical specifications

Here you can get a PDF with the product’s full technical specifications.

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