Free 186 More Best Homemade Tools eBook:  
Get tool plans

User Tag List

Page 1 of 2 1 2 LastLast
Results 1 to 10 of 11

Thread: Can someone help me identify this type of bolt?

  1. #1

    Join Date
    Aug 2018
    Posts
    4
    Thanks
    0
    Thanked 1 Time in 1 Post

    Can someone help me identify this type of bolt?

    Hello, Im not sure its the right place to ask this, but can someone help me with getting the name for this bolt:
    https://imgur.com/a/4i013YH
    https://imgur.com/a/kRDwRQA
    Sorry for the low quality, but hopefully it will be clear enough, Im talking about the half circle half flat bolt. Thanks a lot!

    186 More Best Homemade Tools eBook

  2. The Following User Says Thank You to msacco For This Useful Post:

    Seedtick (Aug 14, 2018)

  3. #2
    Supporting Member thehomeengineer's Avatar
    Join Date
    Nov 2017
    Location
    Berkshire UK
    Posts
    737
    Thanks
    750
    Thanked 2,188 Times in 426 Posts

    thehomeengineer's Tools
    This looks to be simply a shaft with a flat to locate a grub screw for an operating knob or handle. Alternatively, it could be for a knob with the corresponding hole and flat for setting the orientation of the switch/dial etc. If it is a bolt it is a case of removing it getting a new bolt and filing/machining the flat in the correct position. I would be very surprised if you could buy one. What is it on/operating?
    Hope this helps.

    2,000+ Tool Plans

  4. #3

    Join Date
    Aug 2018
    Posts
    4
    Thanks
    0
    Thanked 1 Time in 1 Post
    Quote Originally Posted by thehomeengineer View Post
    This looks to be simply a shaft with a flat to locate a grub screw for an operating knob or handle. Alternatively, it could be for a knob with the corresponding hole and flat for setting the orientation of the switch/dial etc. If it is a bolt it is a case of removing it getting a new bolt and filing/machining the flat in the correct position. I would be very surprised if you could buy one. What is it on/operating?
    Hope this helps.
    Actually its much less complex than you think it is, I want to connect some sort of handle to it, something similar to this: https://agenaastro.com/agena-flexibl...andle-9-5.html

  5. #4
    Supporting Member thehomeengineer's Avatar
    Join Date
    Nov 2017
    Location
    Berkshire UK
    Posts
    737
    Thanks
    750
    Thanked 2,188 Times in 426 Posts

    thehomeengineer's Tools
    Should fit direct to the shaft just need to make sure that the shaft and bore of handle are the same diameter and the lock screw fits on the flat of the shaft.

  6. #5
    Supporting Member JoeVanGeaux's Avatar
    Join Date
    Jun 2018
    Location
    Magnolia, TX
    Posts
    168
    Thanks
    160
    Thanked 58 Times in 44 Posts
    If I had to guess, its a shaft element to permit attachment of a flexible shaft (with a knob at the far end) to control movement of a telescope tube (or some kind of alti-azimuth or rotary mounting system). I don't recall it has a specific name but the protruding part is simply half-round shaft section to allow for a really solid connection to a flexible shaft that is secured by a thumb screw.

  7. #6
    martink's Avatar
    Join Date
    Jan 2016
    Posts
    15
    Thanks
    7
    Thanked 24 Times in 8 Posts

    martink's Tools
    Quote Originally Posted by msacco View Post
    Hello, Im not sure its the right place to ask this, but can someone help me with getting the name for this bolt:
    https://imgur.com/a/4i013YH
    https://imgur.com/a/kRDwRQA
    Sorry for the low quality, but hopefully it will be clear enough, Im talking about the half circle half flat bolt. Thanks a lot!
    How about, 'declination slow motion control shaft' ?
    edit: The end inside the case will be a worm screw.
    Last edited by martink; Aug 15, 2018 at 03:01 AM. Reason: added

  8. #7
    Supporting Member
    Join Date
    Sep 2012
    Location
    Hinchinbrook QLD
    Posts
    323
    Thanks
    44
    Thanked 138 Times in 84 Posts
    Well to start with, the protruding D shape is not a bolt. It is, as others have already mentioned, some sort of shaft for a rotary control. And the other part with the screwdriver slots is meant to be held with one of these
    Can someone help me identify this type of bolt?-f5f4b14huo3xko0.large.jpg
    whilst turning the nut that secures it in place. And that is not a bolt either.

    Cheers Phil

  9. #8
    Supporting Member MeJasonT's Avatar
    Join Date
    Jun 2016
    Location
    Lake District in UK
    Posts
    432
    Thanks
    456
    Thanked 281 Times in 163 Posts

    MeJasonT's Tools
    if you don't have the specific slotted screwdriver as shown by Phil. Just use a pair of needle nose pliers.
    Citizen of the "New democratic" Republic of Britain, liberated from the EuroNation

  10. #9
    Supporting Member MeJasonT's Avatar
    Join Date
    Jun 2016
    Location
    Lake District in UK
    Posts
    432
    Thanks
    456
    Thanked 281 Times in 163 Posts

    MeJasonT's Tools
    or circlip pliers
    Citizen of the "New democratic" Republic of Britain, liberated from the EuroNation

  11. #10
    Supporting Member MeJasonT's Avatar
    Join Date
    Jun 2016
    Location
    Lake District in UK
    Posts
    432
    Thanks
    456
    Thanked 281 Times in 163 Posts

    MeJasonT's Tools
    thread may by a PG size ? often used with glads although imperial and metric threads are also used on rotary pots like the one shown.
    Citizen of the "New democratic" Republic of Britain, liberated from the EuroNation

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •