Auto fasteners clips retainers manufacturers tell you that the materials commonly used in plastic fasteners are mainly polycaprolactam-nylon PA6, polycaprolactam-nylon PA66 and polyoxymethylene POM.

Plastic fasteners, the main physical properties considered:
The first is the performance of high and low temperature resistance.
The second is the performance of impact resistance.
The third is tensile properties.
The fourth is dimensional stability.
The insertion force and pull-out force of buckle products should be stipulated. The insertion force should not exceed 60N, and the pull-out force is generally 80N~750N.
For plastic nuts, the size of the sheet metal square hole, the insertion force, the size of the matching self-tapping screw, and the applicable torque must be specified according to the standard. The manufacturer of Auto fasteners clips retainers tells you that the self-tapping thread matched with the plastic nut should be in accordance with QC/713 regulations. Since the properties of plastics vary greatly, it is recommended to verify the matching holes, self-tapping screws and torque before use, especially for reverse During engineering, completely copied parameters will not be applicable due to differences in plastics.
The manufacturer of Auto fasteners clips retainers tells you that according to different specifications, different insertion and withdrawal forces are specified. The insertion force should not exceed 60N. Cable ties products must define the locking force, generally ≥ 50N.