Members Flutist Posted March 27, 2018 Members Report Posted March 27, 2018 (edited) I acquired a very decent Blanchard Paris gauge, probably between WWI and WWII. However, it has been in the hands of a very awful person who treated it extremely bad. One damage I couldn't yet solve are the screws. It has two eyelet screws with a diameter of 6.59 mm which is probably 1/4 inch.Do you guys have an idea where I get two of those screws??? Edited March 27, 2018 by Flutist Quote
Members baroness Posted March 28, 2018 Members Report Posted March 28, 2018 If you're in the US, I would recommend McMaster, Ace Hardware, or Fastenal. Ace and Fastenal have retail stores so you could go in and see if it matches the thread pitch as well as diameter. McMaster has a huge range of materials and a very good search engine. Quote
480volt Posted March 28, 2018 Report Posted March 28, 2018 The threads on the screw in the photo don’t look damaged, are you replacing it for cosmetic reasons? If you want an exact replacement, you may have to get one from a donor tool. If you just want a functional replacement, than what baroness said, the hardware store is your friend. If it is 1/4” diameter, it may be 1/4-20, which is common as dirt, or 1/4-28, which is not. Blanchard may also have made proprietary thread forms like Singer frequently did. The comical point implies that this is a set screw. If so, you should replace it with a set screw with a similar point to avoid damage to the surface it bears against. Set screws are also typically hardened. If it is just a cosmetic issue, could you just dress the heads with a file? Quote
Members Flutist Posted March 28, 2018 Author Members Report Posted March 28, 2018 I am in metric Europe. So that's kind of a problem. Yes, the one in the photo isn't damaged. The one in my purse is with which I went to a German screw store (yes, you heard right, a store just for screws like zig million screws in there) without success. Quote
Moderator bruce johnson Posted March 28, 2018 Moderator Report Posted March 28, 2018 I have not found replacement screws with that type of head either. On some the head is actually threaded onto the shaft of the screw. I found this when the head screwed right off a few jammed screws. I have also found at least 2 or 3 different threads in equivalent screws on different Blanchard ploughs. I've got about 25 or 30 Blanchards in the back shop right now with various problems with broken or stripped screws. When I get to them, plans are to redrill and tap for modern screws. Quote Bruce Johnson Malachi 4:2 "the windshield's bigger than the mirror, somewhere west of Laramie" - Dave Stamey Vintage Refurbished And Selected New Leather Tools For Sale - www.brucejohnsonleather.com
Northmount Posted March 28, 2018 Report Posted March 28, 2018 7 hours ago, Flutist said: I am in metric Europe. So that's kind of a problem. Yes, the one in the photo isn't damaged. The one in my purse is with which I went to a German screw store (yes, you heard right, a store just for screws like zig million screws in there) without success. Please add your location to your profile. You may get more responses to this and future posts from people in your area. And of course, we like to see where everyone is from. Tom Quote
Members Flutist Posted March 29, 2018 Author Members Report Posted March 29, 2018 I am bit more clever know. I asked a screw maker to make me some and he said no because these screws are actually forged! I am trying to get some made. So if any of you are interested, and it would actually dampen the price I have to pay if I get more than 2 done, just say so. The thread diameter is 6.59 mm exactly (the guy in the screw shop had a digital caliper). I will write the exact measurements a little later when I have an answer from the maker. But that might help you already to figure out if the diameter is the right one. Quote
Members Webicons Posted March 29, 2018 Members Report Posted March 29, 2018 You can also try to contact some people who sells vintage Blanchard tools on Ebay France. You may get lucky. Depending on the damage to the screw you may be able to braze or TIG material onto the screw and shape to suit or perhaps have the shop machine just a threaded rod to match so you can cut and weld on a similar head. I am interested to know the price of two custom screws if you would share. Here in the US it would be very expensive. Good luck! Quote
Members baroness Posted April 9, 2018 Members Report Posted April 9, 2018 Are you trying to keep it original and restoring? Or are you wanting to make it functional? Would it be possible to drill and rethread the female part making it easier to find or have made a matching screw? Or perhaps a more common bolt and have an eye welded to the top? Quote
Members gunny5821 Posted May 5, 2018 Members Report Posted May 5, 2018 Here is a bolt and screw company in Buckinghamshire, also an office in Bedford, that has a similar style that could be modified. It is available in metric, 2mm to 30mm in diameter. https://www.themontrosegroup.com/Products/MONTROSE_EYE_BOLTS_PART_THREADED Regards, Richard Quote
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