Socket set with torx bits

[Loco]

I recently obtained a new socket set. It contains a set of torx driver bits of the type I've used quite extensively. It contains a set of sockets labeled: E6, E8, E10, etc. They are shaped in a six-point star pattern that looks like the inverse of the torx bits. Do these fit a new type of fastener or do they have another use that someone can enlighten me on?

Thanx

Loco

[Mr T]

I think they have been around just not popular. I have seen some headlight aiming adjustors take those type bits (but regular sockets work too since its a low torque app.). Otherwise Ive never seen them in use. Probably anothere crazy GM invention....(they developted the torx)

[jeffo]

They've been around for awhile. Torx screws/bolts are usually used in tamper-resistant (not tamper-proof, because nothing is truly tamper-proof) enclosures. The thought is that because of their unpopularity, it is unlikely that a vandel walking down the street would have torx screwdrivers (whereas one might have a slot or philips). You'll also find torx screws in electronics as electronic manufacturers don't want people that don't know what they're doing poking around.

A reason why GM uses the torx screw for headlight alignment might be as follows: If a novice goes to change the light-bulb in the headlight, he/she might think that the alignment screw opens the lens. It is quite possible that a novice does not have torx drivers so the alignment wouldn't be changed.

Of course, with more people getting these drivers, it is possible that another screw head will have to be created to retain the 'limited-access" that the torx head provides.

[Loco]

I'm familiar with the screwdriver bits, I've used them in various applications. I was curious about the sockets that are labeled with the prefix of E. They look much like a torx screwdriver bit turned inside out.

Thanx

Loco

[joed]

Check out image H on this page.

http://www.bikernet.com/garage/fastenertech.asp