How to Unwrap an Injection Molding Screw
Many screws used in electronics or automobiles are fabricated using plastic injection molding. These plastic screws are used in place of metal screws, and are used to attach other plastic or vinyl parts in various ways. The plastic fastener's reusability and removal process depends on its injection molding process and use. In some cases, these fasteners simply pop out, while others require an unscrewing method like that used in traditional metal screw fasteners. Manufacturers choose plastic fasteners over metal ones because of their low cost but also for cosmetic reasons.
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Things You'll Need
- Flat-blade screwdriver
- Needle-nose pliers (optional)
- Set of precision screwdrivers
- Automotive trim-removal tool set
- Silicone glue
Instructions
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Pop Out Fasteners
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1
Insert the flat edge of a screwdriver beneath the plastic fastener head. Lift gently until the screw head rises slightly from the hole.
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2
Pull the rest of the fastener out with your fingers or by gently grasping the fastener with needle-nose pliers and pulling up.
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3
Inspect the fastener to see if it is reusable. Place it to the side. Some fasteners of this type need a touch of silicone glue on the end to replace it.
Threaded Plastic Fastener
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4
Insert a precision flat-blade screwdriver or the end of an auto plastic trim-removal tool on the fastener's head. Turn the plastic fastener counterclockwise to slowly loosen it from the hole until it rises just slightly from the hole.
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5
Grasp the fastener with your fingers and continue using a counterclockwise movement until you remove it from the hole. By unfastening it with your fingers, you prevent thread damage caused by screwdrivers or removal tools.
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6
Place the fastener in a container to replace later or purchase a new fastener for the part you are replacing from the manufacturer.
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References
- Photo Credit Stockbyte/Stockbyte/Getty Images
