LBSC Cylinder Thread Size

[Bruce VoelkerdingParticipant @brucevoelkerding91659]

both the LBSC designs for Maisie and Juliet show the Cylinder mounting hole size as No. 21. I assume the hole size No. 21 in England is the same as here in the USA, that is 0.159". In neither of these drawing sets do I see the actual Screw size for the attaching Screws. The 0.159" seems rather coarse for 4BA. Would LBSC have expected someone to use a 5/32" Screw (I'm assuming that back then someone would have a 5/32"-32 Die or some such thread) ?

[Bruce VoelkerdingParticipant @brucevoelkerding91659]

[Nicholas FarrParticipant @nicholasfarr14254]

Hi Bruce, LBSC's notes says the cylinders are attached with 5/32" screws or bolts with the nuts inside the frame, for Juliet, I guess that Maisie would be the same.

Regards Nick.

[duncan webster 1Participant @duncanwebster1]

5/32 * 32 is a standard bsw size, and I think was what Meccano screws were in the olden days. Your chance of finding new screws is slim, I'd use m4

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