Apple and other computer products sometimes use Torx screws... I have a set of drivers. Eric Goldstein -- On Tue, Jul 27, 2010 at 2:36 PM, Richard Knoppow <dickburk@xxxxxxxxxxxxx>wrote: > > ----- Original Message ----- From: "Marc James Small" < > marcsmall@xxxxxxxxxxx> > To: <rollei_list@xxxxxxxxxxxxx> > Sent: Tuesday, July 27, 2010 6:33 AM > Subject: [rollei_list] Re: OT: Walmart > > > At 04:31 AM 7/27/2010, Richard Knoppow wrote: > > I tried several hardware stores including two "last resort" stores, > Virgil's in Glendale and Berg in Pasadena, no go. I also tried a couple of > auto supply houses, same thing. > Bristol or spline heads seem to be used mostly on set-screws. I think the > main advantage of Bristol over Allen head is that they don't cam out so the > screws can be tightened more without damaging either screw or wrench, they > have a much more positive fit. > There are some other odd patterns used such as "star" heads and others, I > think there are even Torx set-screws. Tektronix is fond of Torx screws and > uses them all over on their equipment. Torx heads also have an anti-caming > feature and are suitable for use on automatic or power operated tools. The > same for Pozi-Drive head screws. Philips heads are designed to cam out to > limit torque but Pozi-Drive won't cam out and again are suitable for use > with power operated tools. > There are so many types of drive methods that its hard to have tools for > all and some are relatively rare (Reed and Prince screws for instance). And > then one must have both English and Metric. > > -- > Richard Knoppow > Los Angeles, CA, USA > dickburk@xxxxxxxxxxxxx > --- > Rollei List > > - Post to rollei_list@xxxxxxxxxxxxx > > - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the > subject field OR by logging into www.freelists.org > > - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in > the subject field OR by logging into www.freelists.org > > - Online, searchable archives are available at > //www.freelists.org/archives/rollei_list > >