Bolt size please

Ukastronomer (Jeremy) · #1 13-03-2019, 09:37 PM

PLEASE can anyone tell me what thread the standard screws on diagonals and the standard interface (for not knowing the right word) are

Thanks

I want to replace them with something longer with a larger head, I don't want to over tighten but they are never tight enough to hold a Quark

Saturnine (Jeff) · #2 13-03-2019, 11:42 PM

The Skywatcher focusers and diagonals that I have, the retaining screws are M4 X 0.7mm pitch. Have purchased replacement thumb screws for some, not necessarily from the sellers linked here. Just some examples.

https://www.ebay.com.au/itm/Kipp-Thu...53.m1438.l2649

Ukastronomer (Jeremy) · #3 14-03-2019, 12:09 AM

Great thanks

£3.95 UK. I hope

https://www.ebay.co.uk/itm/KNURLED-T...-/182019943325