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Small Screw/Bolt question — Parallax Forums

Small Screw/Bolt question

NWCCTVNWCCTV Posts: 3,629
edited 2013-05-11 12:57 in General Discussion
Does anyone by chance know what size screws/bolts are used for securing small (1.5" x 1.5") Board cameras? They are smaller than 4-40. I am thinking 2-56 but before I order them I want to be certain.

Comments

  • Ken GraceyKen Gracey Posts: 7,392
    edited 2013-05-10 22:11
    NWCCTV wrote: »
    Does anyone by chance know what size screws/bolts are used for securing small (1.5" x 1.5") Board cameras? They are smaller than 4-40. I am thinking 2-56 but before I order them I want to be certain.

    If you have a pair of calipers you could take a measurement of the diameter of the mounting holes, then compare to the diameter of a 2-56 screw. I bet a 2-56 would fit if it's too small for a 4-40. McMaster Carr here you come!
  • NWCCTVNWCCTV Posts: 3,629
    edited 2013-05-10 22:55
    Great idea!!!! I can't believe that slipped my mind. Now I just need to find my calipers. I think Lowe's carries Nylon screws that small so I may just go that route.
  • ajwardajward Posts: 1,130
    edited 2013-05-11 08:00
    NWCCTV wrote: »
    Great idea!!!! I can't believe that slipped my mind. Now I just need to find my calipers. I think Lowe's carries Nylon screws that small so I may just go that route.

    Ace usually carries nylon hardware, but I notice the selection varies store to store.

    @
  • RDL2004RDL2004 Posts: 2,554
    edited 2013-05-11 08:39
    I used to be able to get a variety of 4-40 hardware from the local Home Depot, but the last time I was in there they didn't have anything smaller than 6-32. I guess there just wasn't enough sales volume.
  • IroneIrone Posts: 116
    edited 2013-05-11 11:35
    Hello,

    The major diameter of a numbered thread (e.g. 6-32) is given by D=0.013*N+0.060 so a #6 has a major diameter of 0.138 in.
  • CuriousOneCuriousOne Posts: 931
    edited 2013-05-11 12:57
    in metric system that size is called M2.
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