9

I have a set of jewel screwdriver bits, for torx, Phillips, etc. However, there's one bit that looks like a Phillips head that's inverted or backwards, and I can't figure out its function.

The bit is a female Phillips head, and the label in the kit just says "PH 2", which I imagine means Phillips head, size 2.

What do you use this for? Getting another screwdriver out of something?

Inverted phillips screwdriver bit

Edit: Here's most of the set, in case it helps. The top left bit (not in the handle) is the one I'm talking about. The set is filled with various bits that you would use on small screws.

whole set

Here's the web archive for the amazon product. I bought it in the U.S., whose page has been removed, but the same product is on the U.K. page. According to the product details, the screw bit is a Cross size: PH2. Maybe it was simply a miscommunication with the manufacturer when the bits were milled?

Stephen S
  • 207
  • 2
  • 6

2 Answers2

15

The bit that you are asking about is what is called a "concave Phillips" or "inverted Phillips" bit. They are used for removing screws that look like this:

enter image description here

(picture found at ebuy7.com)

The cross pattern on the screw head is actually raised.

Michael Karas
  • 67,833
  • 7
  • 68
  • 153
-1

maybe used for a specific size thumb screw
enter image description here

Community
  • 1
jsotola
  • 3,256
  • 1
  • 15
  • 22