Author Topic: Tap and Drill Recommendations for Primary and Secondary Well Plug Set  (Read 442 times)

Offline klinebau

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I purchased the plug kit for the primary and secondary wells.  What are the recommended tap and drill sizes.  As I understand it, the primary plugs are 10-32 and the secondaries are 7/16-18 (is this size correct?  It seems to be uncommon).

Offline klinebau

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Re: Tap and Drill Recommendations for Primary and Secondary Well Plug Set
« Reply #1 on: December 18, 2019, 04:33:59 PM »
It turns out that there are instructions that come with the kit :).  For the primary well, Cliff recommends 0.136" drill bit from a numbered set and a 10-32 tap.  The secondary well requires a 7/16-20 tap.

Offline Mr.Pontiac

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Re: Tap and Drill Recommendations for Primary and Secondary Well Plug Set
« Reply #2 on: January 15, 2020, 07:33:51 PM »
Just throwing my 2 cents worth in here if i may, find whats easier a 18 or 20 thrd.set screw. whats more difficult i believe is that the set screw you buy has to be thin. Allen wrench on a grinder works. i have never found thin set screws they are all standard length. good luck & keep me informed. Rich