Thank you Rich. I think this is the solution. Do you know what is the difference between American Threaded Fasteners and British Association BA?
Gabriel El 19/04/2010, a las 21:54, Rich escribió: > The Whitworth thread shape and pitch standards are used in some of the > current British Model Engineering sizes. Measure the actual diameter of your > screw and determine its diameter in fractions of a n inch and then measure > the thread pitch and convert to threads/inch. Select fasteners on this page. > http://sssmodels.com/ This is not the only place you can get them but its > a start. The thread profile is 55 degrees with a rounded root and crest. > Nothing else fits but a Whitworth. > > [email protected] wrote: >> Those screws are, for sure, from a Bettini reproducer. And, of course, they >> are more than 100 years. Perhaps the picture, because of the camera flash, >> has a too hight contrast and screws look like new ones, but if you look at >> them directly you can count the years they are. >> I woulk like to find a withworth 1/8'' nut better than changing the screws. >> Do you think is so difficult? >> Gabriel >> ----Mensaje original---- >> De: [email protected] >> Fecha: 18/04/2010 21:17 >> Para: "Antique Phonograph List"<[email protected]> >> Asunto: Re: [Phono-L] Problems with withworth screws >> Gabriel, >> Those screws don't look 100 years old and I doubt that they are original >> to your machine. I think I would replace them with screws and nuts of the >> samesise with standard threads. You can probably find some old ones that >> would be in character with your machine. Keep the screws you have with your >> machine just in case you ever find the correct nut, >> ----- Original Message ----- From: "Gabriel Marro" >> <[email protected]> >> To: "Antique Phonograph List" <[email protected]> >> Sent: Sunday, April 18, 2010 2:32 PM >> Subject: [Phono-L] Problems with withworth screws >> I am restoring a phonograph and have found a problem with screws and nuts. >> This image: http://www.boxio.com/390IKUMODS33/withworth screws&nut.JPG >> shows two screws and a copper nut that is to be embedded in the wood. Well, >> my problem is that the phonograph lacks the other nut. Here, in Spain, there >> is almost impossible to find withworth screws o nuts as they have never been >> used here since more than one hundred years. >> Do any of you know where can I get a nut to put it embedded in the wood? I >> think the metric is 1/8'' Withworth. >> Thanks in advance, >> Gabriel. >> El 18/04/2010, a las 03:19, [email protected] escribió: >>> Join us tonight and Talk Antique Phonographs, records or any other related >>> subject on the weekly Antique Phonograph Forum located here. Hoping to see >>> some new forum participants, and some old ones who have not visited in >>> awhile. >>> >>> http://www.oldcrank.org/chat/ >>> >>> Bruce >>> _______________________________________________ >>> Phono-L mailing list >>> http://phono-l.oldcrank.org >> _______________________________________________ >> Phono-L mailing list >> http://phono-l.oldcrank.org _______________________________________________ >> Phono-L mailing list >> http://phono-l.oldcrank.org >> _______________________________________________ >> Phono-L mailing list >> http://phono-l.oldcrank.org > _______________________________________________ > Phono-L mailing list > http://phono-l.oldcrank.org _______________________________________________ Phono-L mailing list http://phono-l.oldcrank.org
