Quad 303 screws

[cpu_bach]

Hello. I am restoring my Quad 303 amplifier. The screws to fix the top cover and the rear cover are different from ISO standard screws. They are not inch-size ones like the US product. Does anyone know the source for the screws for my future maintenance?
Thanks!

 

[Jan Dupont]

I believe that your screws are metrics (also called BSP thread) according to British Standard (and standard European norm)

 

[dhaen]

Hi,

If they are similar size to M3.5, they are 4BA
If they are similar size to M2.5, they are 6BA

These were the UK small screw thread standard before we adopted ISO.

See this link for details: BA

Ja mata..

 

[cpu_bach]

Thanks!

Dear ACD and dhaen,

Thank you for your feedbacks. I guess I have to find some 4BA screws. Are they still available in UK or elsewhere?

Best regards.

 

[dhaen]

Hi cpu_bach,

I can send you some. Please send me an email through the forum.

 

[cpu_bach]

Thanks, John

Thanks. I have just sent you an E-mail.

 

[cpu_bach]

Thanks!

Dear John,
Received screws today. They are perfect for my repair work.
Thanks!