On 21/02/2019 14:09, wrote:
I need some 3/16 BSW brass, raised head, countersunk screws, either
7/32" or 1/2" long. Can anyone suggest a supplier?

Is brass essential?

I can get equivalent size 10-24 in UNC in A2 Stainless.

https://www.ebay.co.uk/itm/A2-Stainl...0/291640830602

Same major diameter, same pitch although 60degs thread rather than BSW
55degs.

Any doubt get a tap.

Any reason why a standard countersink can't be used?