Knurling Head Bolt Metric Thread Wafer Brass Coating Gallery Knurling Head Bolt Metric Thread Wafer Brass Coating Cold Forming Knurling Head Bolt Metric Thread Wafer Brass Coating Ric Sun2020-06-17T23:13:39-07:00 Knurling head bolt with a head is knurled so that the raised detail 'bites' into the plastic irrespective [...] Knurling Head Bolt Metric Thread Wafer Brass CoatingRic Sun2020-06-17T23:13:39-07:00