I have a question to all concerning nail, screw material and sizes. Specifically, how do I know what size to use in each application. Is there a book, general rules etc. to fastener size. I know about nailing schedules, but when there are none how do I choose the proper fastener for the task at hand.
Thank you kindly.
Replies
I'm not sure this will help a lot, but the McFeeley's web site has lots of info. I think the web address is McFeeleys.com.
My MA state code book, and I imagine other code books, have an appendix that list not only fastening schedules but fastener sizes and options as well. Seems to match pretty well what we see in the field. There are always new products coming out that give other options, though. Like Danno said, McFeeley's is a good source for new fastener products.
Mike
Edited 4/17/2005 10:15 am ET by mike maines
A general rule of thumb for rough carpentry might be something like:
- 8d for toenailing
- 10d for sistering studs (also for toenailing, but I would predrill)
- 16d for nailing into the grain and for sistering joists
For screws, McFeely catalog has a lot of great information. #8 screws for light framing (basically the equivalent of 10d nails, though not equivalent shear strength unless heat-treated), #10 for more meat. In general screw from smaller wood into larger wood, try to get 2x screw into larger wood as is in smaller wood (did that make sense?). You'll notice that the threads on screws typically cover 2/3 of the shank. If any of the thread is left in the fastened wood, that may keep the pieces apart. Sometimes ratio of 1/2 instead of 2/3 is sufficient, once you're long enough, McFeelys has ProMax screws with the thread just on 1/2 of the shank.
Oh and everyone (Fastenmaster and Simpsons at least) p!sses on lag screws....