Coach Bolts or Coach Screws

[terryhawkins]

I'm in the process of planning a deck, and I will need to attach two 2x6 joists either side of a 4x4 post.

Now, I cannot find a coach bolt or a drill bit that will go right the way through the 8 inches of wood.

Will coach screws on either side be just as good?

Thanks in advance.

 

[HERTS P&D]

Hi Terry,

what you need is the item below:
http://www.screwfix.com/prods/22257/Fixings/Injection-Fixing/Threaded-Rod-M10-300mm-Pk5

and an extention for a flat wood bit , which is below.
http://www.screwfix.com/prods/16769...Flat-Wood-Drill-Bits/Flat-Bit-300mm-Extension

Don't forget to use the large plate washer at either end.

Hope that helps.

Andy

 

[terryhawkins]

That's great many thanks!

How big does the hole need to be for M10 rods and bolts? The extension says its for 16mm flat bits and upwards?

 

[merlin50]

a hole for a 10mm bolt in wood needs to be very close to 10mm the coach screws is the easy way

 

[JohnD]

you can mark the joists and drill them separately. No need to go through them all in one if you haven't got a long enough bit.

 

[WabbitPoo]

Timberloks are better than bolts and screws. Use them all the time. Google 'em.

 

[opps]

http://aird-tools.co.uk/shop/contractors-extra-length-ground-drill-10mm-315mm-p-11938.html

315 mm long and faster/straightener holes than a flat bit

 

[WabbitPoo]

Timberloks are better than bolts and screws. Use them all the time. Google 'em.

Worth sayin' again!