Free 173 Best Homemade Tools eBook:  
Remove advertisements
Results 1 to 5 of 5

Thread: Small screw thread gauge

  1. #1
    mklotz mklotz's Avatar
    Join Date
    Aug 2015
    LA, CA, USA
    Thanked 3,205 Times in 1,102 Posts

    mklotz's Tools

    Small screw thread gauge

    Despite years of working with tiny hardware, the inevitable decay of age has made it difficult to distinguish the smaller numbered screws by sight or touch.

    The typical thread gauge doesn't include the smaller sizes so I decided to make myself a dedicated small screw thread gauge. A scrap of bronze (?) 1-3/8 x 1/2 x 1/8 was selected for its friendly threading behavior. (If you make one of these, by all means avoid steel, especially stainless; also aluminum for its gumminess.)

    From left to right the screws are 00-90, 0-80, 1-72, 2-56, 3-48, 4-40, 5-40. For scale, the giant 5-40 is 0.125" diameter and the 00-90 is 0.047". I didn't include the even smaller 000-120 and 0000-160 since I seldom use them and the screws bend too easily on something that's going to be handled like this will.

    Regards, Marv

    Home Shop Freeware

  2. The Following 7 Users Say Thank You to mklotz For This Useful Post:

    jjr2001 (12-05-2018), Jon (12-03-2018), Paul Jones (12-06-2018), philipUsesWood&Brass (12-04-2018), Seedtick (12-03-2018), stuffucanmake (12-17-2018), will52100 (12-03-2018)

  3. #2
    Jon is offline Jon has agreed the Seller's Terms of Service
    Administrator Jon's Avatar
    Join Date
    Jan 2012
    Colorado, USA
    Thanked 8,231 Times in 2,789 Posts
    Reminds me of one of my favorite mklotz tool builds:

  4. #3
    will52100's Avatar
    Join Date
    Oct 2015
    Bassfield, MS
    Thanked 39 Times in 20 Posts

    will52100's Tools
    Nice, and a very useful tool. I did something similar several years ago out of 1/8" annealed 1084. It's my cheat sheet for liner lock folders, got the tap size hole, tapped hole, and clearance for the screw hole, with sizes letter stamped so I know which is which.

  5. #4
    Beserkleyboy's Avatar
    Join Date
    Aug 2014
    Sunny South Coast NSW, Australia
    Thanked 115 Times in 60 Posts

    Beserkleyboy's Tools
    Marv, great work as always. I first looked at the photo and thought, yea, 3,4,5,6,7,8 and 9mm! Certainly my most used sizes! I'm afraid my dexterity is not what it once was, and have admitted defeat to the real small stuff...fortunately, I work wood, typically to 1/2 mm tolerance.. and my contact with metals is limited to hardware and bits and pieces for jigs and shop made accessories...and then, it's back to the 3,4,5,6,8 and 10mm staples. I still have (and buy) 'inferial' gear, as it still has a place in the DNA..thanks again for your inspirations, cheers.
    30 yr expat in AUS

  6. #5
    Content Editor DIYer's Avatar
    Join Date
    Aug 2013
    Thanked 765 Times in 700 Posts

    Thanks mklotz! We've added your Small Screw Thread Gauge to our Measuring and Marking category,
    as well as to your builder page: mklotz's Homemade Tools. Your receipt:

    Post your reply!
    Join 33,912 of us and get our 173 Must Read Homemade Tools eBook free.

    173 Must Read Homemade Tools

Thread Information

Users Browsing this Thread

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


Posting Permissions

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