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General Workshop Discussion
Misc How-To’s
Random machinery restoration questions (ongoing)
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<blockquote data-quote="OldGreyDog" data-source="post: 1570707" data-attributes="member: 39174"><p>For what its worth, if you get stuck and need to clean out or re-cut a thread in old machinery, I have a decent selection of quality taps and die’s ranging from around 5/16” to 1” in BSF, BSW and UNC/UNF, including a few taper’ cutters. Its worth remembering that while metric and UNC/unf have 60 degree thread angles, BSF and BSW have 55 degree thread angles. </p><p></p><p>I bought them as a job-lot a couple of years ago from the son of a retired engineer/machinist and there must be around 15 kg of them excluding holders!</p><p></p><p>If you know what size(s) you need and can’t find them in your area I can post to you and you can send it/them back when you are done.</p><p></p><p>Apologies if its against the rules to post a link (mod’s please delete if necessary), but the website below has a useful charts of thread details, old and new, including the important angles and tpi information. Only posting for the thread tables - I have no connection to the company.</p><p></p><p>[URL unfurl="true"]https://www.gwr-fasteners.co.uk/thread-dimensions-4-w.asp[/URL]</p></blockquote><p></p>
[QUOTE="OldGreyDog, post: 1570707, member: 39174"] For what its worth, if you get stuck and need to clean out or re-cut a thread in old machinery, I have a decent selection of quality taps and die’s ranging from around 5/16” to 1” in BSF, BSW and UNC/UNF, including a few taper’ cutters. Its worth remembering that while metric and UNC/unf have 60 degree thread angles, BSF and BSW have 55 degree thread angles. I bought them as a job-lot a couple of years ago from the son of a retired engineer/machinist and there must be around 15 kg of them excluding holders! If you know what size(s) you need and can’t find them in your area I can post to you and you can send it/them back when you are done. Apologies if its against the rules to post a link (mod’s please delete if necessary), but the website below has a useful charts of thread details, old and new, including the important angles and tpi information. Only posting for the thread tables - I have no connection to the company. [URL unfurl="true"]https://www.gwr-fasteners.co.uk/thread-dimensions-4-w.asp[/URL] [/QUOTE]
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General Workshop Discussion
Misc How-To’s
Random machinery restoration questions (ongoing)
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