A: No they will not. Even with wood you will want to pre drill as they snap in half easy
A: They asked me fir a review, I wrote it and they changed it for a very nice review that wasn’t mine. I said NO, it didn’t meet my expectations for the price, besides it’s complicated to use.
A: No it is basically a wood screw and they don't come in fine thread.
A: They do make both, coarse and fine. If it’s not in your local store I’m sure you could order them
A: Hi John I think you are right, I looked at Kreg for 2 1/2 in fine thread and could not find it.
A: #8 diameter
A: This screw is a #8 diameter that Kreg recommends for use with pocket holes in 1.5" thick material.
A: kregtool.com says they are: For use with 1-1/2" (38mm) and larger stock Optimized for use with the Kreg Jig® HD 2-1/2" (65mm) long #14 hardened-steel screws
A: This is a #8 screw.
A: Although it will hold the boards together, Kreg does not make a recommendation for boards that thick. A 2.5" pocket hole screw is designed to be used in material that is 1.5" thick. I have included a chart from Kreg that lists their recommendations.
A: Hi Ken - While Im not a professional cabinet or furniture maker I can tell you that I have used these screws to hold similar boards together. If your boards are 2.5" inches thick, these screws will definitely hold them together. I would highly recommend that you run a bead of glue between the boards prior to securing them with these screws. I would also recommend placing on every 3-6 inches depending on how wide your work piece is. If your piece is narrow then putting two together approximately 1.5" apart should do the trick. Dont for get the wood glue, it will make all the difference in the world. Good Luck
A: If I understand your question correctly, " can you join 2 - 2 1/2 inch boards together?" YES
A: kregtool.com says: For use with 1-1/2" (38mm) and larger stock Optimized for use with the Kreg Jig® HD 2-1/2" (65mm) long #14 hardened-steel screws
A: Yes. Joined 2 1/2" cypress with them.
A: Yes, they will easily join 2 21/2 boards together
A: Yes, when used with a pocket jig. With half of the screw being threaded, this is ample to grip the board being joined. Depending on the application I would reinforce the joint with a suitable wood glue. Gorilla is my favorite.
A: Used in the right way, as a but joint with using a Kreg jig.
A: Yes. I used pocket screws exclusively on my mitre saw table project and the joints are very strong.