Results 1 to 3 of 3

Thread: What Size Hole for Tap?

  1. 01-09-2004, 8:10 PM #1
    Ken Robb
    Ken Robb is offline [OP] Member
    Join Date
    Dec 2003
    Location
    Johnstown, PA
    Posts
    51

    What Size Hole for Tap?

    I'm installing my new Vega fence & the holes on my Grizzly 1023 don't match. I need to drill & tap some new holes. What size hole do I drill for a 5/16-18 tap?

    Thanks,

    Ken
    Last edited by Ken Robb; 01-09-2004 at 8:14 PM.
    Reply With Quote Reply With Quote
  3. 01-09-2004, 8:28 PM #2
    Bruce Page's Avatar
    Bruce Page
    Bruce Page is offline Moderator
    Join Date
    Feb 2003
    Location
    In the foothills of the Sandia Mountains
    Posts
    16,644
    Ken, for the standard 75% thread you want to use a "F" drill (.257)

    A 17/64 (.265) drill will give you about 65% thread.
    Last edited by Bruce Page; 01-09-2004 at 8:31 PM.
    Please help support the Creek.


    "It's paradoxical that the idea of living a long life appeals to everyone, but the idea of getting old doesn't appeal to anyone."
    Andy Rooney
    Reply With Quote Reply With Quote
  4. 01-09-2004, 10:56 PM #3
    Dean Baumgartner's Avatar
    Dean Baumgartner
    Dean Baumgartner is offline Member
    Join Date
    Nov 2003
    Location
    Cecil Wisconsin (near Green Bay)
    Posts
    280
    Quote Originally Posted by Bruce Page
    Ken, for the standard 75% thread you want to use a "F" drill (.257)

    A 17/64 (.265) drill will give you about 65% thread.
    Ken,
    When I installed my Vega on a Delta saw the tapped holes weren't the right size either. Instead of trying to tap new holes, there were I think alternate spaceing holes on the Vega front rail so I drilled through holes in the apron of the saw top. Used a bolt all the way through with a flat and a lock washer on the back. This arrangement has been fine for the last 10 years.


    Dean
    Reply With Quote Reply With Quote
« Previous Thread | Next 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
  •  

Forum Rules