Metric Thread Diameter: M2.5(2.5mm) / M3 (3mm)/M4 (4mm) / M5 (5mm) / M6 (6mm) / M8(8mm) Metric thread pitch: 0.45mm(M2.5) / 0.5mm(M3)/0.7mm(M4) / 0.8mm(M5) / 1mm(M6) / 1.25mm(M8) Available Length: 5mm-50mm (excluding the length of the head).
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