classic dominator siding screws

jimmyparker · 12-17-2016, 03:02 PM

Attempting to replace fenders on a Classic Dominator trailer and found the screws to be in between 1.5 and 2.0 torx bits, I have several sets of bits and nothing between these two sizes nor does McMaster Carr supply show anything in the middle. Any ideas?

Thanks
Jimmy Parker

Painter · 12-17-2016, 03:30 PM

Jimmy the screws on both of my Classic trailers have been double square. Square bits work fine, sorry but cant remember what they call the size.

FED 387 · 12-17-2016, 04:03 PM

They're are called Robertson. Find them in the home improvement centers H Depot- Lowes etc.

Sean Marconette · 12-17-2016, 10:28 PM

It is not a torx bit, I have a classic trailer and as the other guys have pointed out a square bit is all you need. In the hardware store like HD, deck screws have single square heads. That is the bit that you need.

Sean

jimmyparker · 12-18-2016, 01:13 PM

Thanks for the help, a #2 square did the job although it didn't make sense to me!!

FED 387 · 12-18-2016, 01:53 PM

They use that style of drive because you can drive the screw in from an odd angle and also they do not strip out the square drive area like a Phillips drive will. FES 387

Hacksaw · 12-18-2016, 01:59 PM

That screw head was designed by a Canadian named Robertson somewhere in the 1950's. Four sizes matched to a colour. Smallest being yellow, then green, red and black. Never got popular in the States but they really work well, stay on the end of your driver bit and don't strip easily.

Painter · 12-18-2016, 05:06 PM

We saw a lot of them in the marine industry in late 50s and the sixtys. Good fastener, lots better than a phillips. Still see them a lot in the electrical industry.

340Cuda · 12-21-2016, 12:15 PM

Quote:

Originally Posted by Hacksaw

That screw head was designed by a Canadian named Robertson somewhere in the 1950's. Four sizes matched to a colour. Smallest being yellow, then green, red and black. Never got popular in the States but they really work well, stay on the end of your driver bit and don't strip easily.

Does anyone know where the screws can be purchased? A few of mine have rusted for some reason and it would be nice to match the rest of them.

Thanks,
Bill

FED 387 · 12-21-2016, 12:57 PM

McMaster Carr sells them they are listed as PAN HEAD SQUARE DRIVE screws ---lots of diameters and lengths as well as material zinc coated/stainless steel etc. to choose from--- come in pkgs of 100---FED 387

12-17-2016, 03:02 PM	#1
jimmyparker Member Join Date: Oct 2009 Location: columbus, georgia Posts: 383 Likes: 65 Liked 302 Times in 86 Posts	classic dominator siding screws Attempting to replace fenders on a Classic Dominator trailer and found the screws to be in between 1.5 and 2.0 torx bits, I have several sets of bits and nothing between these two sizes nor does McMaster Carr supply show anything in the middle. Any ideas? Thanks Jimmy Parker

12-17-2016, 04:03 PM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,409 Likes: 505 Liked 329 Times in 177 Posts	Re: classic dominator siding screws They're are called Robertson. Find them in the home improvement centers H Depot- Lowes etc.

12-17-2016, 10:28 PM	#4
Sean Marconette Senior Member Join Date: Mar 2006 Posts: 977 Likes: 786 Liked 274 Times in 76 Posts	Re: classic dominator siding screws It is not a torx bit, I have a classic trailer and as the other guys have pointed out a square bit is all you need. In the hardware store like HD, deck screws have single square heads. That is the bit that you need. Sean __________________ Sean Marconette 84 Mustang 5060 SS/N

12-18-2016, 01:13 PM	#5
jimmyparker Member Join Date: Oct 2009 Location: columbus, georgia Posts: 383 Likes: 65 Liked 302 Times in 86 Posts	Re: classic dominator siding screws Thanks for the help, a #2 square did the job although it didn't make sense to me!!

12-18-2016, 01:53 PM	#6
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,409 Likes: 505 Liked 329 Times in 177 Posts	Re: classic dominator siding screws They use that style of drive because you can drive the screw in from an odd angle and also they do not strip out the square drive area like a Phillips drive will. FES 387

12-17-2016, 03:30 PM	#2
Painter Member Join Date: Dec 2012 Posts: 227 Likes: 4 Liked 162 Times in 45 Posts	Re: classic dominator siding screws Jimmy the screws on both of my Classic trailers have been double square. Square bits work fine, sorry but cant remember what they call the size.

12-18-2016, 01:59 PM	#7
Hacksaw Senior Member Join Date: Sep 2016 Posts: 880 Likes: 201 Liked 306 Times in 172 Posts	Re: classic dominator siding screws That screw head was designed by a Canadian named Robertson somewhere in the 1950's. Four sizes matched to a colour. Smallest being yellow, then green, red and black. Never got popular in the States but they really work well, stay on the end of your driver bit and don't strip easily.

12-18-2016, 05:06 PM	#8
Painter Member Join Date: Dec 2012 Posts: 227 Likes: 4 Liked 162 Times in 45 Posts	Re: classic dominator siding screws We saw a lot of them in the marine industry in late 50s and the sixtys. Good fastener, lots better than a phillips. Still see them a lot in the electrical industry.

12-21-2016, 12:57 PM	#10
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,409 Likes: 505 Liked 329 Times in 177 Posts	Re: classic dominator siding screws McMaster Carr sells them they are listed as PAN HEAD SQUARE DRIVE screws ---lots of diameters and lengths as well as material zinc coated/stainless steel etc. to choose from--- come in pkgs of 100---FED 387