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[PO51UHD]

Hello All, does anyone know the thread type and size for the small screws which secure tank badges on ‘50s Redditch models?

Thanks

Stephen

[Adrian]

2BA is ringing bells, let me check and I'll confirm that in a while.



A.

[Mark M]

I think it's 3/16" Bsf? And don't get them too long! REgards, Mark.

[Presto]

2BA x 1/2 inch countersunk

[colinp]

I don't know the exact size but I think on my 500 twin they were shorter than 1/2 inch - they definitely are countersunk. I'll try and measure the length later. The screws to hold on my chrome panels were longer as I recall.

[Presto]

Try host website - http://accessories.hitchcocksmotorcycles.com/18725

[Adrian]

Yep, part no. 42195, 90p each (including VAT) from our hosts.



If you want stainless steel, a search on that well-known auction site under A2 Stainless Steel 2BA Raised Countersunk Slotted Head Machine Screws might yield something...



A.

[colinp]

1956 500 Twin - just measured (roughly) against a metal tape measure - 5/16 inch. If they are too long they won't work.

[PO51UHD]

Thanks everyone!

Stephen

[Mark M]

Stephen, I just had a thought, which tank badges are we talking about? There were 2 sorts in the 50s, the early pressed metal ones which use a BA size (3BA I think but I can check a tank,) and then the later plastic 'crown' badge which screws either directly to the tank OR to the chrome 'teardrop' trim panel. and which uses what I think is a Bsf screw. The reason for not using too long a screw with the trim panels is that they will push through and lift the panel away from the tank leaving an ugly gap. An easy mistake to make, even a bike in the National Motorcycle Museum is restored like this.

REgards, Mark