Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 4 of 4
  1. #1
    Join Date
    Feb 2013
    Location
    Laidley, SE Qld
    Posts
    1,038

    Default Taps marked with drill size

    This set of 11/16" x 18 taps (old car tie rods) arrived today. Interestingly, as well as the usual tap info they also say on the tap what size to drill the hole, in this case its 16.1mm, I've never seen that on a tap before. I had to check that they were right of course, theoretically the size is 16.05 so 16.1 is close enough for me.


  2. #2
    Join Date
    Oct 2004
    Location
    Southern Highlands NSW
    Posts
    1,894

    Default

    I've only seen that on thread insert type taps.
    I have a chart that gives alternative drill sizes, depending on the class of fit wanted.

    Jordan

  3. #3
    Join Date
    Jul 2007
    Location
    Perth
    Posts
    332

    Default

    Bob,
    I have a set of taps made by Vermont American and as sold by Sears some 30 years ago (when they made 1/2 decent stuff) and they also have a suggested drill size on the shank.

    Sorry my picture taking quality is not in the same league as Anorak Bob's.

    Alan

    tap2.jpg

  4. #4
    Join Date
    Sep 2006
    Location
    Mallacoota,VIC,Australia
    Age
    53
    Posts
    1,010

    Default

    HI,
    I have a Metric and Imperial Tap & Die set (separate sets - about 15 years old) in My Shed and both Sets have Drill sizes on them. I do have some newer Taps though and they don't have Drill sizes on them.
    Drill sizes for Metric Taps are easy anyway ie 16mm x 1.5 use a 14.5mm drill and 8mm x 1.0 use a 7mm drill.
    All The Best steran50 Stewart

    The shortest way to do many things is to do only one thing at once.

Tags for this Thread

Posting Permissions

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