Metric HHM/HHMU Series Internal Hoopster Retaining Rings are dicult to remove from the groove without a removal provision. We oer either a bent end for removal or no removal provision as shown to the left. Ring Groove Outside Diameter Radial Wall Thickness Diameter Width Housing Diameter Smalley Part Number 1, 2, 4 Stock Items available in carbon steel and 302 stainless steel. Product Dimensions All dimensions in millimeters unless otherwise specified. WITH REMOVAL PROVISION HHM-_ _ NO REMOVAL PROVISION HHMU-_ _ Use “HHM” prefix for removal provision end. Use “HHMU” prefix for no removal provision. Add sux “-S02” for 302 stainless steel. 3 Based on a groove material yield strength of 310 N/mm2 and a safety factor of 2 4 See pages 134-135 for How to Order. 2