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What thread!?
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INV3RSE View Drop Down
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Joined: 23 Apr 2022
Location: Cornwall
Points: 50 		Post Options Post Options   Thanks (0) Thanks(0)   Quote INV3RSE Quote  Post ReplyReply Direct Link To This Post Topic: What thread!?
    Posted: 04 Aug 2022 at 4:59am
Hi everyone

I need to order a tap and dye set to clean up a few bolts and holes on my ED-40

Trouble is I’m not sure if the thread and don’t want to get the wrong size!

Anyone know if they are BSW or UNF or UNC?

Thanks 😊
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Gary View Drop Down
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Joined: 13 Sep 2009
Location: Peterborough,On
Points: 5900 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2022 at 5:16am
My guess for that era would be UNC.

If you could obtain P/N's for the particular bolts from an ED-40 Parts Catalog, they could be compared to a North American built Allis.

Gary
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 87869 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2022 at 8:58am
we sent a LOT of equipment to England during WW II....... Due to that , they started converting a lot of manufacturing to UNC instead of British Standard.... "SOME" companies were slow to conform, buy many did......

I would  get a couple 3/8 and 1/2 inch bolts and "test fit" them in specific holes that you know are good, to confirm the size.
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 87869 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2022 at 9:04am
also, wire brush the head and look at the markings... Many British bolts were marked by their manufacture as BW or UNC .... or manufacturer letters.
Like them all, but love the "B"s.
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Joined: 23 Apr 2022
Location: Cornwall
Points: 50 		Post Options Post Options   Thanks (0) Thanks(0)   Quote INV3RSE Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2022 at 11:45am
Thanks guys great reply’s here.

Not sure why I didn’t think this before but Iv just had a look through the literature and sure enough almost every bolt is shown as UNF or UNC.

Thanks for the help everyone 😊
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