Socket pin - in - hex Button Head - Machine (Metric) Pinit $0.24 to $0.56 Quantity discounts available QuantityPrice SKU: 6. Button Head - Machine (Metric) Select options Back $0.24 to $0.56 Screw Diameter : M3 M4 M5 M6 Screw Length : 4 6mm 10mm 12mm 16mm 20mm 25mm 30mm 40mm Screw Material : 18-8 Stainless Steel Quantity -+ Purchase