Hi, the total length is roughly 3 and a half cm. What screws would allow me to have washers and nuts on the back to secure it? I need the screw, washer and nut.
Hi @Ruby2325,
Welcome to the Bunnings Workshop community, it is wonderful to have you with us.
Unfortunately, right now, I don't have enough information to give you a specific recommendation. Can I trouble you for a bit more information? I'll ask a few questions to help guide us.
Which piece are you trying to attach to which other piece? Maybe an arrow on your photo showing the path of the fixing would be helpful.
Is the 3.5cm measurement the thickness of those pieces combined?
A screw drives into something, whereas a bolt goes through it and has a nut attached to the other side. Do you want a bolt or a screw?
If using a bolt, is there anything on the opposite side that would stop you from putting the nut over it?
Is it just to attach the pieces together, or is there going to be some significant weight involved? If there is a fair bit of weight, we'd need to use higher gauge bolts.
If the thickness of the two pieces is 35mm, then 50mm bolts would likely be the way to go. If weight is minimal, some M8 bolts such as these https://www.bunnings.com.au/pinnacle-m8-x-50mm-zinc-plated-hex-head-bolts-and-nuts-4-pack_p0168447 with some https://www.bunnings.com.au/zenith-5-16-x-m8-zinc-plated-flat-washer-22-pack_p2420275 .
I can give a much more definitive answer when you have the chance to get back to me.
Jacob
Hi thank you so much for the fast response! I drew the arrow direction and the piece of wood and what it is going into, is combined 3.5cm A bolt would be good, nothing on the other side to stop a washer and nut. The size of the hole in the wood is about half a cm wide. it's holding up a cat scratch post, it's not heavy at all
If the hole is half a cm, that would be 5mm, which is equivalent to M5, in which case you can use a M5 50mm bolt and nut with M5 washers. You do need to be really precise though because if it is even 4.5mm as opposed to 5mm, an M5 bolt won't fit.
Is there a hole in the other piece as well or would you need to drill one?
If there's not, you'd need to drill a hole in it using a 5mm drill bit.
Let me know if you have any further questions.
Hi Jacob, I bought a lovely ryobi drill and bit set from you guys, won't be an issue. What if I just bring the piece into a store and see what fits?
Sounds like a good plan @Ruby2325.
Let me know if there is anything else I can assist with.
This is the hole, any help?
Looks like there is a countersink and then the actual clearance hole.
The clearance hole looks to be around 4-5mm, but it's tough to tell. When you take it in store, try an M5 bolt first. If that doesn't work, try an M4.
There is usually a thread tester in stores that you can use for this, but if not, I am sure the team would be happy to help you grab something to test it with.
I guess I could get the m5 and if it doesn't fit, I could drill it with the 5mm drill piece?
Yes, that would work.
Thanks Jacob I will just buy them all and keep whatever else for another job, thanks!
