Type 22 – Standard double circlip
Type HD/22 – Headed pin with standard circlip
Type HD/45/28RP – Headed pin with collar and roll pin retention
Type HD/45/28S – Headed pin with collar and S cotter retention
Type SN/28S – Antirotation snub pin washer and S cotter retention
Type HD/28S – Headed pin with washer and S cotter retention
Note: Where S cotters are employed split cotters can be used as an alternative.