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Battery cable to starter stud nut
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Mopar1
Posted 2018-04-01 1:44 PM (#560887)
Subject: Battery cable to starter stud nut



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Posts: 2684
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Location: N.W. Fla.
went to hook up the cable to my starter & the nut vanished. None of the nuts I have seem to thread on, not sure if the threads on the stud might be messed up a little or just guessing wrong on the nut size. Anyone got one sitting around that they could check? BB starter
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Mopar1
Posted 2018-04-02 8:31 PM (#561007 - in reply to #560887)
Subject: Re: Battery cable to starter stud nut



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Posts: 2684
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Location: N.W. Fla.
Found out it's a 5/16 stud, but it's not a standard thread. :-(
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mstrug
Posted 2018-04-02 10:10 PM (#561017 - in reply to #560887)
Subject: Re: Battery cable to starter stud nut



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Probably? a 5/16" x 20 TPI, Threads per Inch. 5/16-18 is NC AND 5/16''-24 IS FINE. (NF) I found this:

''While I was working on my vintage balloon tire bike the other day I needed a nut. I thought, no problem, I have an ample supply of misc. hardware. After all it was just a 5/16" nut, right...
After not being able to match it, I pulled out the thread gauge. 5/16-20, no problem, or so I thought. 5/16-18 is standard, but 5/16-20 is an oddball... After some head scratching, I turned to Google. Apparently I'm not the first person to run into this problem. Well, it turns out that an M8 x 1.25 pitch metric nut fits perfectly. These are readily available from McMaster-Carr:
# 90592A022 (Metric Plain Steel Hex Nut, Class 8, M8 Size, 1.25MM Pitch, 13MM W, 6.5MM H, Packs of 100) $4.51''
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Mopar1
Posted 2018-04-03 6:44 AM (#561033 - in reply to #561017)
Subject: Re: Battery cable to starter stud nut



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Posts: 2684
2000500100252525
Location: N.W. Fla.
mstrug - 2018-04-02 9:10 PM

Probably? a 5/16" x 20 TPI, Threads per Inch. 5/16-18 is NC AND 5/16''-24 IS FINE. (NF) I found this:

''While I was working on my vintage balloon tire bike the other day I needed a nut. I thought, no problem, I have an ample supply of misc. hardware. After all it was just a 5/16" nut, right...
After not being able to match it, I pulled out the thread gauge. 5/16-20, no problem, or so I thought. 5/16-18 is standard, but 5/16-20 is an oddball... After some head scratching, I turned to Google. Apparently I'm not the first person to run into this problem. Well, it turns out that an M8 x 1.25 pitch metric nut fits perfectly. These are readily available from McMaster-Carr:
# 90592A022 (Metric Plain Steel Hex Nut, Class 8, M8 Size, 1.25MM Pitch, 13MM W, 6.5MM H, Packs of 100) $4.51''
thanks! I'll check into this!
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Mopar1
Posted 2018-04-06 7:46 PM (#561231 - in reply to #560887)
Subject: Re: Battery cable to starter stud nut



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Posts: 2684
2000500100252525
Location: N.W. Fla.
OK. Turns out there was a burr on the stud keeping the nut from screwing on. Was told by a starter guy that it's a 5/16-18 nut & it is!
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mstrug
Posted 2018-04-06 8:39 PM (#561232 - in reply to #560887)
Subject: Re: Battery cable to starter stud nut



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Posts: 5588
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Location: Newark, Texas (Fort Worth)
MM-Hmm.
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Mopar1
Posted 2018-04-07 4:30 PM (#561258 - in reply to #561017)
Subject: Re: Battery cable to starter stud nut



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Posts: 2684
2000500100252525
Location: N.W. Fla.
mstrug - 2018-04-02 9:10 PM

M8 x 1.25 pitch metric nut fits perfectly. These are readily available from McMaster-Carr:
# 90592A022 (Metric Plain Steel Hex Nut, Class 8, M8 Size, 1.25MM Pitch, 13MM W, 6.5MM H, Packs of 100) $4.51''
M8 1.25 by the way is a standard nut. Sell for about .43 cents each individually.
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