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Expert
Posts: 3027
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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Expert
Posts: 3027
Location: N.W. Fla. | Found out it's a 5/16 stud, but it's not a standard thread. :-( |
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Expert 5K+
Posts: 6487
Location: Newark, Texas (Fort Worth) | 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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Expert
Posts: 3027
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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Expert
Posts: 3027
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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Expert 5K+
Posts: 6487
Location: Newark, Texas (Fort Worth) | MM-Hmm.
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Expert
Posts: 3027
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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