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          HLH-0524x12.7-HD11.1

          HL Inserts

          HLH Series Inserts

          The advantages:
          It features rounded knurls,avoiding the stress raising sharp crests and roots which typify knurls used on most inserts.
          Low stress generating characteristics-ideal for amorphous thermoplastics
          Double ended assists automatic feeding
          High torque resistance
          Flange prevents escape of plastic
          Self-aligning assists Installation
          Designed for thermoplastic plastics (PC、PPS、ABS、PP etc.)

                      
          Installation:
          Heat-lok has been designed for installation using heat rather than ultrason-ics, since direct heat best suits the plastic flow required by the insertprofile;
          Mould design should be arranged to eliminate residual stresses in the area of theboss or hole into which the insert is to be installed.    

          REQUEST SAMPLES
          TECHNICAL PARAMETER
          FAQ
          A  Thread size 5/16-24UNF
          L  Insert lengths .500 in
          OD  Insert diameter .393 in
          P Pilot end .375 in
          HD  Head diameter .437 in
          T Head thickness .052 in
          Base panel material Plastic
          H  Hole diameter .378-.382 in
          W  Min. wall thickness .197 in
          Materials Brass
          Surface Treatment Cleaning
          Installation
          Equipment/Method          		 Heat Staking/Ultrasonic

          HLH Brass Threaded Inserts data


          Q1: What are the main advantages of the Heat-Lok threaded insert?
          A: The Heat-Lok insert offers the following key benefits:

          • Rounded knurl design minimizes stress concentration, avoiding sharp edges common in standard knurls

          • Low stress generation during installation, ideal for amorphous thermoplastics

          • Double-ended design facilitates automatic feeding in production environments

          • Excellent resistance to rotational torque

          • Integrated flange prevents plastic escape during installation

          • Self-aligning feature simplifies installation process

          • Specifically designed for thermoplastics including PC, PPS, ABS, PP, and similar materials

          Q2: How should Heat-Lok inserts be installed?
          A: The installation process requires:

          • Using thermal installation methods (rather than ultrasonic techniques)

          • Direct heating to achieve optimal plastic flow around the insert profile

          • Proper mold design to eliminate residual stresses in the boss or mounting hole area

          Q3: Why is thermal installation preferred over ultrasonic methods for these inserts?
          A: Direct heating provides superior control over the plastic flow required for the insert's specific profile, ensuring optimal material distribution and bonding strength.

          Q4: What materials are compatible with Heat-Lok inserts?
          A: These inserts are specifically engineered for use with thermoplastic materials including PC, PPS, ABS, PP, and other similar polymers.

          Q5: How does the rounded knurl design benefit the application?
          A: The rounded knurl configuration reduces stress concentration points that can lead to cracking in the host material, particularly important for amorphous thermoplastics.

          Q6: Can these inserts be used in automated production systems?
          A: Yes, the double-ended design enables reliable automatic feeding, making them suitable for high-volume production environments.

          Q7: What special considerations should be made for mold design?
          A: Molds should be designed to minimize residual stresses in the area where the insert will be installed, ensuring optimal performance and material integrity.