M3 (3mm) / M4 (4 mm) / M5 (5mm) / M6 (6mm) / M8. 0.5mm(M3) / 0.7mm(M4) / 0.8mm(M5) / 1mm(M6) / 1.25mm(M8). M etric thread pitch Material:304 (A2-70) stainless steel.
eBay