Square drive screwdriver
- Daryl Bruhl
- 356 Fan
- Posts: 104
- Joined: Sun Mar 30, 2008 8:55 am
- Location: Grand Terrace, CA
Square drive screwdriver
Came across a square drive screwdriver that is stamped 'for screws 8-9 W-Germany'. I have owned my 63 super 90 for 19 years and a couple early VW's and don't recall ever seeing any square drive screws on these cars. Any one have a clue? Maybe just a hardware store tool for the more finished look a square or hex head gives. Enjoy 63 super 90 sunny SoCal
Daryl Bruhl
-
- 356 Fan
- Posts: 151
- Joined: Sun Mar 13, 2016 9:36 pm
- Location: Canada
Re: Square drive screwdriver
That is known as a Robertson bit; invented by a Canadian IIRC. Not used much in the USA or ROW due to not being invented there. Resists head strip out much better than most heads. I have never seen them used on cars.
Contact for Kardex
-
- 356 Fan
- Posts: 338
- Joined: Tue Mar 25, 2008 6:14 pm
Re: Square drive screwdriver
used in the original front wheel drive gmc motorhomes. Mostly in the cabinetry and windows etc.,
Michael Foster
Michael Foster
MICHAEL FOSTER
- Jack Walter
- 356 Fan
- Posts: 403
- Joined: Fri May 09, 2008 9:36 pm
Re: Square drive screwdriver
We had a mid-sixties Chevy Step Van that had Robertson head screws all over the interior and dash area - that was the first time I remember seeing them.
-
- 356 Fan
- Posts: 403
- Joined: Thu Jan 14, 2010 4:55 pm
- Location: Rhode Island
Re: Square drive screwdriver
Robertson screws were used on Model T Fords made in Canada at one time. Ford was too cheap to pay licence fees to use in the USA. This head style has enjoyed a resurgence in popularity recently. Contractors use them for decking screws, as they work well with screw guns.
Philips head screws were used for aircraft assembly during WWII more to prevent over torquing. - where the Roberson pattern is better for high torque applications.
Philips head screws were used for aircraft assembly during WWII more to prevent over torquing. - where the Roberson pattern is better for high torque applications.