I have been looking all over to find 7 inch long 4- 40 screws.

I found McMaster carries threaded 4-40 rods that are 8 inches long but these are not screws.

I know they do exist as I found one just lying around (image) but haven't been able to find a vendor.

Could someone help me find 7 inch long 4-40 screws.

If not, what would be a good way to turn 4-40 threaded rods into makeshift screws? there won't be too much strain on the screw so im not worried about the strength.

enter image description here

  • They can be used for securing insulation, so that may be something to check.
    – Solar Mike
    Jun 19 '19 at 20:56
  • Fastenal?....... Jun 19 '19 at 21:09
  • I would call that a bolt or a machine screw. Maybe that will help with your search.
    – Matthew
    Jun 19 '19 at 21:10
  • 1
    To clarify: you are asking how to get a 4-40 threaded rod with a head on it that could be used with a slotted (or Phillips) screwdriver? Would you be OK with a screw with a hex head on it instead? If so, maybe two nuts tightened against each other on the end of the rod? Would you be open to soldering/brazing something on the end of the rod to form the head?
    – spuck
    Jun 19 '19 at 23:35
  • Or just one nut, held in place with LockTite or cyanoacrylate cement. Jun 20 '19 at 21:14

A threaded 4-40 rod with a cap nut/acorn nut on one end would be similar to a screw.

Acorn Nut Wikipedia page

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