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Carpentry & Joinery

i need to bolts 6x2 to 4x4 posts,for decking joist. due to weight what bolts would i be able to use that wil be strong enough?? m12 coach bolst1500mm ???

Anonymous user 03/03/2024 - 2.36 PM

is it best to notch out the 4x4 so the 6x2 sits on it like a halving joit or should it be ok to just bolt stright onto the 4x4 ??thanks for your other answers

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4 Answers

PBcarpentry

Rating: 4.9 out of 5
Eastleigh
M12 coach bolts would be fine. 150mm galvanised preferable.
Answered21 June 2011
2

Anonymous user

M12 bolts are fine, and as PB said, galvanised, you could also put in some timber dog washers.
Answered21 June 2011
2

SMS MAINTENANCE SERVICES

Rating: 5 out of 5
Leyland
m12 coach bolts 150mm will be adequate or m12 coach bolts 120mm
Answered21 June 2011
1

Cannon Preservation Ltd

Rating: 5 out of 5
Colchester
Yes M12 Galvernised but if the depth is 4" =100mm + 2"=50mm overall 150mm then unless your countersinking them i would get 175mm. Personally i would notch out only 25mm! I built a small decking area outside my workshop and i notched the 100mm x 100mm uprights and sat my frame with the support on the inside of the frame and bolted. Good Luck.
Answered22 June 2011
1