Ben Hutchings Posted May 28, 2018 Share Posted May 28, 2018 Hello, I'm trying to find out what thread size the bolts / set-screws that hold rear lamps on early spits and GT's is. For example, part number 510757. They look like a small BA thread to me. I must admit, I've not yet tried to identify them by thread-count or depth. I can't find my gauges yet as most of my workshop is still in boxes :) Any ideas? Quote Link to comment Share on other sites More sharing options...
Ben Hutchings Posted May 29, 2018 Author Share Posted May 29, 2018 I found my micrometer, but not callipers or thread guages. It's 4.6mm OD, and about 1.2mm pitch. I reckon that's a 2BA. I think I'm going to order some up, but if anyone knows otherwise please shout! This is part of a long term 'where appropriate, replace hardware it with aluminium, stainless or brass campaign when it breaks' for my rusty old GT :) Quote Link to comment Share on other sites More sharing options...
Ben Hutchings Posted May 29, 2018 Author Share Posted May 29, 2018 They say that talking to yourself... is a sign that you've asked a terminally boring question on the forum. For Googlers and future generations, the lamps are fitted with 2BA hardware, and I can recommend http://ba-bolts.co.uk which just happens to be about a mile from my house. Quote Link to comment Share on other sites More sharing options...
Paudman Posted May 29, 2018 Share Posted May 29, 2018 One of mine is Phillips and one is flat... the latter I think is the original. Quote Link to comment Share on other sites More sharing options...
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