Knockout Quality 25 Pack Thread Forming Screws M4 1.46 X 16MM Black Finish Round Washer Head T20 Torx Drive Straight Up Beast Mode For Tough Plastic Trim And Auto Body Work No Sweat Install Guaranteed
✔️ M4 x 16mm Black Round Washer Head T20 Drive Auto Fastener
These precision fasteners cut mating threads directly into thermoplastic sheet metal and injection molded panels without requiring separate nuts or threaded inserts. Mechanics typically rely on them to secure grille vents, split quarter panels, and deployable airbag trim when original anchor points fracture from vibration or age damage. This twenty five piece kit keeps your toolbox stocked for routine upholstery swaps and exterior clash plate mounts.
✅ Thread pitch measures 1.46 millimeters for secure grip in hard plastics✅ Overall length reaches sixteen millimeters with an eight point seven millimeter flange diameter
✅ Torx T twenty drive prevents cam out during high torque applications
✅ Compatible with OEM cross references including GM 11546970 and Ford W506945 S450B
✅ Finish includes a durable black oxide coating to resist surface rust outdoors
💡 Best method for installing M4 thread form screws into brittle plastic trim
Switching to tap style fasteners saves serious headache during panel work around doors and hoods.
- Rotate the shaft slowly into drilled holes until the ridge cuts its own matching path inside the substrate
- Lock down quarter shield brackets and hood latch mechanisms without snapping original mounting bosses