Custom Shoulder Screws Metric Thread Undercut Knurling Steel Gallery Custom Shoulder Screws Metric Thread Undercut Knurling Steel Cold Forming Custom Shoulder Screws Metric Thread Undercut Knurling Steel Ric Sun2020-06-16T20:24:15-07:00 Custom shoulder screws are one type of shoulder screw with specially designed according to the client's request or [...] Custom Shoulder Screws Metric Thread Undercut Knurling SteelRic Sun2020-06-16T20:24:15-07:00