Small Screw/Bolt question

Comments

• Ken Gracey Posts: 7,415

  2013-05-10 22:11 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!
• NWCCTV Posts: 3,629

  2013-05-10 22:55 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.
• ajward Posts: 1,130

  2013-05-11 08:00 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.
  
  @
• RDL2004 Posts: 2,554

  2013-05-11 08:39 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.
• Irone Posts: 116

  2013-05-11 11:35 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.
• CuriousOne Posts: 931

  2013-05-11 12:57 edited 2013-05-11 12:57

  in metric system that size is called M2.