| A Thread size | 4-40UNC | |
| L Insert lengths | .170 in | |
| OD Insert diameter | .181 in | |
| P Pilot end | .154 in | |
| Base panel material | Plastic | |
| H Hole diameter | .157-.161 in | |
| W Min. wall thickness | .063 in | |
| Materials | Brass | |
| Surface Treatment | Cleaning | |
| Installation Equipment/Method | Heat Staking/Ultrasonic | |
How to add threads to plastic inserts?
To add threads to a plastic Insert, you can use a variety of methods depending on the type of Insert you are using and the specific application. Here are some common methods:
1. Using threaded inserts
Heat-Set Insert:
Installation: Heat the insert using a soldering iron or special heating tool. Insert it into the pre-drilled hole in the plastic. The heat will melt the surrounding plastic, allowing the insert to be firmly embedded. After cooling, the insert will have strong threads suitable for screwing.
Self-drilling insert:
To Install: Drill a pilot hole in the plastic. Choose a self-tapping insert that matches the size of the screw you plan to use. Simply screw the insert into the pilot hole and it will form its own threads when installed.
2. Thread directly into plastic
Tapping:
If the plastic is thick enough, you can drill an appropriately sized hole and then use a tap to cut the threads directly into the plastic. This method works well with certain types of plastic that can withstand the tapping process without cracking.
3. In-mold inserts
During the molding process:
If you are making plastic parts, you can incorporate threaded inserts during the injection molding process. This involves placing the insert into the mold before injecting the plastic, allowing the plastic to mold around the insert and form a strong bond.
4. Use adhesive
Adhesive Bonding:
For some applications, you can use an adhesive to bond the threaded metal insert to the plastic. This method is less common but works very well for low stress applications.
Notes:
Material Compatibility: Make sure the insert material is compatible with the type of plastic you are using.
Pilot Hole Size: When using self-tapping inserts or self-tapping threads, make sure the pilot hole is the correct size for the insert or tap.
Load Requirements: Consider the loads and pressures applied to the threads to ensure the method selected will provide adequate strength.
By selecting the appropriate method for your specific needs, you can effectively add threads to your plastic Inserts.