M4x 30 mm; Steel zinc plated
M5x 16 mm; Steel zinc plated
M6x 16 mm; Steel zinc plated
M6x 20 mm; Steel zinc plated
M8x 16 mm; Steel zinc plated
Despite vacuum tubes, valve bases and related accessories haven't been mass-produced for about 35 years, they are, and will, be used in high-quality amplifiers, music gear (old and new), testing equipment, across the industries, as well as in research,...