F.A.Q. about Threaded Inserts

Here are some answers to common questions. This is a relatively new product and many people are of course reluctant to drill holes in their beloved instrument. We totally get that! Anyways, here is a little bit of know how, collected from successful projects! Let’s share the it in the guitar builder community!

  1. This looks easy peasy, why should I read this?
    • before you start drilling into your precious instrument, better practice the usage of the inserts first!
      We recommend to us a bit of scrap wood ( hard wood) , in order to practice the whole drilling and inserting process. Once you feel confident enough, go and get that neck!
      You can find the instructions here: download page
  2. What tools do I need ?
    • You need a drilling machine/power drill. A drill press works best, to achieve the perfect perpendicular holes. For the M4 Inserts you need a 6.5mm drill bit, for the M5 ones we recommend a 8.5mm drill bit.
    • After drilling, a countersink drill bit is recommended , to make a nice beveled edge.
    • For insertion of the inserts, use our brand new mounting tool!
    • A T-shaped Hex driver /Allen key is better then the Ikea style keys.
    • Some people use a bench drill with a hex bit, to insert the inserts, slowly, turning the bit holder by hand. Its described in detail in the instructions.
  3. Which screws should I use: M4 or M5?
    • First thing to check: How big are the heads of the old screws? Many guitars from Asia have slightly bigger heads than the Fender standard. Also check the holes in the neck plate you plan to use. The M4 screws have a 7.3mm diameter head. the M5 screws have a 9mm diameter head. too small screws don’t look good in some neck plates.
    • M5 Screws are more massive and heavier than M4 screws. If you want to go for maximum rigidity, choose the M5 kits. 4 screws and inserts will add about 50 grams to your instruments weight.
  4. Which screw length is right for my instrument ?
    • measure the thickness of the body, at the neck pocket. the size might be somewhere between 20 and 30 mm. The Fender Strats have about 28mm, and 45 screws are the perfect length. My J-Bass has 24mm, so I took the 40 mm screws.
    • !!! Screws which are mounted recessed in the body with bushings, washers or ferrules are shorter!
    • you can simply measure the existing screws ( if applicable) , and buy screws with a similar length.
    • nectite measures infographic
      click to see full size
  5. Does it change the sound of my Instrument?
    • Oh, that’s a good question. Lets put it this way: you get the best sound and sustain possible out of your guitar. The joint between neck and body will be optimized for the sound to travel easily through the construction of your instrument. The neck joint will not be an limiting factor for sustain anymore.
  6. My instrument has 5 ( 6, 7…) Screws, what now?
    • no problem, just drop me a note. Price will be the same.

  7. What are the metric screw sizes in Inch?
     That’s a good question. I looked it up in the interwebs, it seems like M4 is approximately
    UNC 8- 32UNF 8- 36
    M5 is approximately:
    UNC 10- 24UNF 10- 32
  8. My Instrument has screws of different length, what now?
    • same thing! Guitars with ergonomically shaped neck heels often have 2 different screw sizes. Just drop me a note, we will find the perfect match.
  9. I jammed the thread of an insert/screw, how can I fix it?
    • That’s bad, but not the end of the world. I told you so, please practice first 😉 !
      I will replace the screws and inserts (shipping costs only) no questions asked.
  10. What else can the inserts be used for?
    • use your imagination! I use it to mount the tremolo springs, and also the strap pins ( end pins) Works great! Pleas check out our mini inserts as well, you can use them for many purposes!
  11. I read all this up to here, but my question is still not answered!
    • o.k., just get in touch! I don’t know everything, but we will find a solution, I promise!