With Allen, TORX, and other screws - the screw driver has to be pretty close to perpendicular in order to apply large torque. That can be inconvenient in a tight space. With the Robertson's tapered square hole, you can be considerably off perpendicular and still apply a large torque without the driver popping out or damaging the screw or driver. I do have a "special" set of Allen wrenches with a ball shaped tip that allows the wrench to vary considerably from perpendicular. However, you don't need a "special" Robertson driver to get that function.
> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On > Behalf Of Chase, John > Sent: Sunday, July 25, 2010 10:38 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: C-I-C-S vs KICKS > > > -----Original Message----- > > From: IBM Mainframe Discussion List On Behalf Of Dave Salt > > > > > Most hardware and home center stores don't even know what a > > > Robertson-drive screw IS. And of the few that know, you'll only > find > > > wood screws. No machine screws. :-( > > > > Flat head screws are garbage, and Phillips ('X' head) screws are only > a small step up from garbage. If > > I buy a product that comes with flat head or Phillips screws I > usually > throw them away. I was > > astonished when I learned Phillips screws are widely used in America. > > > > A tip to all Americans: Next time you go to Canada, be sure to buy > Robertson screwdrivers and screws. > > :-) > > Phillips are fine for low-torque applications like electrical device > mounting. For higher-torque applications we already have Allen and > TORX, among others. What's "magic" about a square hole? > > -jc- > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
