Thread into head
Created by: 6464s
Orig. Posting Date | User Name | Edit Date |
Jul 12, 2021 08:07PM | tothefloor | |
Jul 12, 2021 06:08PM | 6464s | Edited: Jul 13, 2021 03:20AM |
Jun 27, 2021 05:43AM | 6464s | |
Jun 26, 2021 09:38AM | tothefloor | |
Jun 24, 2021 08:33AM | 6464s | |
Jun 24, 2021 08:16AM | 6464s | |
Jun 24, 2021 06:09AM | Dan Moffet | |
Jun 24, 2021 04:50AM | 6464s | Edited: Jun 24, 2021 05:38AM |
Jun 24, 2021 12:16AM | minibitz | |
Jun 23, 2021 01:59PM | MGPHIL | |
Jun 23, 2021 08:36AM | 6464s |
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this is before I had my stroke but I think I drilled and tapped a 12g 940.
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I finally found the answer. My threaded nut of the sensor is 5/8 - 18 UNF.
What was confusing me was I could not find a nut to fit the sensor nut. The reason was the 1st thread was slightly banged up by the PO.
It just so happened that I had a 5/8 - 18unf die and what was really fortunate was; it was the one with a split in the die. I needed the split kind to fit over the bulb sensor to get to the nut.
This only took a year.
What was confusing me was I could not find a nut to fit the sensor nut. The reason was the 1st thread was slightly banged up by the PO.
It just so happened that I had a 5/8 - 18unf die and what was really fortunate was; it was the one with a split in the die. I needed the split kind to fit over the bulb sensor to get to the nut.
This only took a year.
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Did you drill and tap the cast iron head? or just chase?
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I have both bits...did this once before
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I have 5/8 X 18 which makes it UNF.
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Dan, that's the ticket. I wanted some light reading.
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Quote:
Originally Posted by 6464s
Sorry, should have been more clear. I wanted the sensor thread. Thanks Minibitz. What does UNC stand for? I should say, is this a plumbing number?
https://en.wikipedia.org/wiki/Unified_Thread_Standard
Pipe threads are different. The threaded portion is tapered so that as you tighten the joint, the gap between the pipe threads and the fitting threads continue to close up until there is no space and it won't (shouldn't) leak even gases.
https://en.wikipedia.org/wiki/National_pipe_thread
.
"Hang on a minute lads....I've got a great idea."
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Sorry, should have been more clear. I wanted the sensor thread. Thanks Minibitz. What does UNC stand for? I should say, is this a plumbing number?
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Thermostat stud holes are 5/16 UNC. Temp sensor hole is 5/8 UNC.
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64
I am assuming you are talking about the hole for the temp sensor. I believe this is a straight thread. I don't recall the thread, I would have to measure it again (I had reworked one some time ago).
I am assuming you are talking about the hole for the temp sensor. I believe this is a straight thread. I don't recall the thread, I would have to measure it again (I had reworked one some time ago).
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HI All, What is the thread that is under the thermostat housing? 3/8 NPT? thanks Jim