Screws BA. 12 BA x 1/8" Brass Countersunk screws £7.18/100 post paid to UK. email lostignition8@gmail.com for pdf list of BA screws in Steel, Brass and Stainless. Socket screws in steel and stainless. Taper Pins in Steel and stainless. BA nuts and washers in Brass, Steel and stainless. Model Engineer Taps and dies. BA taps and dies. Split Pins in Steel and stainless.