View Full Version : posi-drive screws

06-15-2007, 10:46 AM
As I have been working on my TR6 I have been amazed at the number of posi-drive screws. I am used to seeing them on GM cars but never thought they would be used on Triumphs.

06-15-2007, 10:49 AM
I am not familiar with the posi-drive screw. How do they differ?

06-15-2007, 11:25 AM
The angle of the slot is different than with the normal Phillips. You can mess either up by using the wrong driver.

06-15-2007, 11:37 AM
The posi-drive screws have four lines on the head between the four slots. I have found that nearly all of the cross slot screws have been posi-drive. I suspect those that are not may have been replaced.

06-15-2007, 01:31 PM
My local auto parts store didn't have good posi-drive bits, so I had to order mine from;


06-15-2007, 01:55 PM
here's another type that has always given me problems...

06-15-2007, 02:32 PM
The only place I have found any Posi-Drive screws on my car are the ZS carbs.

06-15-2007, 02:52 PM
Another direct Lara link:


06-15-2007, 04:33 PM
The only place I have found any Posi-Drive screws on my car are the ZS carbs.

LOL Right in front of you face Bill, in plain sight - holding the dashboard on.

They are all over the car. Mostly it seems in the interior, for holding interior trim bits together (speaker covers on the trans, visor clips, etc.)

06-15-2007, 05:16 PM
Oh, that's why I keep "screwing up" those little buggers.

06-15-2007, 08:28 PM
Rear tailight lenses on the TR4-4A