Step 17: ACR® Phillips Square-Driv®
Also from the Phillips Screw Company and very similar a Phillips Square-Driv plus the added ACR Anti-Camout Ribs.
Advantages and Disadvantages of ACR Phillips Square-Driv
All the advantages of the Phillips Square-Driv. ACR is for reduced camout, reliable stick-on and high torque. The screw heads are marked with double ticks as shown.